Developer Tools Startups funded by Y Combinator (YC) 2024

Since graduating from YC, Amplitude (W12) has made it to IPO and beyond by helping cutting edge startups become category leaders. We’ve pioneered the digital analytics category to become the go-to solution for AI pioneers (Cruise, Midjourney), apps that touch millions of consumers (Doordash, Coinbase), and the best in B2B (Atlassian, Rippling, Canva). With product analytics, experiment, CDP, session replay, and more, Amplitude’s digital analytics platform shows you what your users love, where they’re getting stuck, and what keeps them coming back. You want to build a generational business, and we have the capabilities and pricing plans to guide you every step of the way. Check out our special deal for YC companies and get started on your analytics journey.

GitLab is the first single application for the entire DevOps lifecycle. Only GitLab enables Concurrent DevOps, unlocking organizations from the constraints of today’s toolchain. GitLab provides unmatched visibility, radical new levels of efficiency and comprehensive governance to significantly compress the time between planning a change and monitoring its effect. This makes the software lifecycle 200% faster, radically improving the speed of business. GitLab and Concurrent DevOps collapses cycle times by driving higher efficiency across all stages of the software development lifecycle. For the first time, Product, Development, QA, Security, and Operations teams can work concurrently in a single application. There’s no need to integrate and synchronize tools, or waste time waiting for handoffs. Everyone contributes to a single conversation, instead of managing multiple threads across disparate tools. And only GitLab gives teams complete visibility across the lifecycle with a single, trusted source of data to simplify troubleshooting and drive accountability. All activity is governed by consistent controls, making security and compliance first-class citizens instead of an afterthought. Built on Open Source, GitLab leverages the community contributions of thousands of developers and millions of users to continuously deliver new DevOps innovations. More than 100,000 organizations from startups to global enterprise organizations, including Ticketmaster, Jaguar Land Rover, NASDAQ, Dish Network and Comcast trust GitLab to deliver great software at new speeds.

Our mission is to make every search interaction meaningful & rewarding, through developer-friendly and enterprise-grade APIs. Algolia is the leading Search & Discovery API for websites and mobile apps. We help the most innovative companies across e-commerce, media and SaaS industries create powerful, relevant and scalable discovery experiences for their users. Unlike other solutions, our hosted platform reduces the complexities of building and scaling a fast, relevant digital experience and helps teams accelerate development time. More than 9,000 companies like Under Armour, Twitch, Periscope, Medium and Stripe rely on Algolia to manage 50+ billion search queries a month. Founded in 2012, we're backed by $184M in funding from Accel Partners, Alven Capital, Point Nine Capital and Storm Ventures. The team is headquartered in San Francisco with offices in Paris, London, New York, and Atlanta. To learn more, visit www.algolia.com. --- We’re looking for talented, passionate people to build the world’s best search technology. As an ownership-driven company, we seek team members who thrive under autonomy and diversity. We're committed to building an inclusive and diverse workplace. We care about each other and the world around us, and embrace talented people regardless of their race, age, ancestry, religion, sex, gender identity, sexual orientation, marital status, color, veteran status, disability and socioeconomic background

Acquired by Pluralsight in May 2019

OneSignal is the leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. Our easy-to-use interface empowers content creators to focus on quality user engagement instead of complex implementation. Our powerful platform enables over a million businesses to deliver 10 billion messages daily and 1 in 7 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Upwork, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

At Sendbird, we are building the world's no1. customer communications platform. We power over 300M+ people's conversations every month and we are working with the leading customers such as DoorDash, Match Group, Yahoo!, PayPal, Walgreens, and have raised $220M+ in total funding from ICONIQ, Tiger Global, Meritech, Emergence, SoftBank Vision Fund, Steadfast, Shasta, and August.

Nobody should have to employ expensive imaging scientists and engineers for their business to get the most out of their visual media. This is where imgix has your back. imgix is a platform for managing, processing, rendering, optimizing, and delivering your existing visual assets so that you can meet the demands of your business and your team can stay focused on what they do best. The business demands on web visual media can blindside even the most hyper-aware content teams and developers. Just to be competitive on the Internet, you need your images to be sized perfectly to every device, served in one of any of a half dozen web formats, optimized to the absolute best perceptual quality while maintaining pinpoint performance, and distributed to wherever your users are, anywhere in the world. And that is just the baseline. Next-level imaging concerns like copyright, licensing, accessibility, moderation, illegal or explicit content, "fake news", and more, can threaten your business at any moment if not handled properly. Get any of these things wrong and you are shedding revenue, ceding ground to competitors, and potentially exposing your business to extreme liability. By working with imgix's powerful APIs, SDKs, user interfaces, and integrations, you can rest assured that any demands on your images and videos will always be met, now and into the future, without you having to invest in building it yourself or patching together a mishmash of open source and third-party technologies. Our platform is designed to ensure that your images are always working for your business and never against it. imgix was launched through the famed Y Combinator accelerator program. Its customers include Google, Lyft, Kickstarter, AirBnb, Coursera, Bonobos, Spotify, Vimeo, Bustle, and many others.

Release delivers staging environments as a service. With Release a staging environment is automatically generated with every Pull Request which removes the bottleneck most companies have when they only have a single staging environment.

Zeplin is an organized workspace to publish finalized designs, where the entire team can collaborate to ship beautiful products together. We were founded in 2014 and today we are honored to support 5+ million users from thousands of product teams including Apple, Starbucks, Salesforce, Amazon, Microsoft, Audi and many more. We’re a Y Combinator startup, also backed by amazing investors like Elad Gil, Mike Maples, Kevin Hale. We’re a distributed crew with offices in San Francisco, Istanbul and London. We're Hiring! Please apply directly on Zeplin's job site: https://zpl.io/jobs

At Aptible, we envision a world where developers achieve more with less infrastructure. We’re building the platform that empowers developers at companies of all stages of development to move beyond the traditional method of managing infrastructure—DIY with expert infrastructure and platform engineers on AWS, GCP, or Azure. We’ve done this through our secure, compliant, reliable, and scalable Platform as a Service that’s been used by thousand of developers, hundreds of companies, and dozens of publicly traded and unicorn companies since 2013.

Built by electrical engineers for electrical engineers, SnapMagic removes monotony so that engineers can do their best work. SnapMagic’s electronic component data is used by over 1.5 million engineers across the world’s largest organizations. Its new AI Copilot will change the way that every engineer designs electronics. Join at www.snapmagic.com.

Memfault is the first IoT reliability platform that empowers teams to build more robust devices with software at scale. We believe that device reliability engineering will transform how developers build and operate IoT and edge devices with more productivity and more collaboration. As IoT applications continue to grow in complexity, it is more important than ever for developers to have Memfault’s performance monitoring, device debugging, and OTA update capabilities built into their fleet of devices for proactive device operations. We built Memfault to enable developers with a more scalable and sustainable process to accelerate go-to-market, de-risk product launches, cut product costs, and deliver overall superior products.

APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth. Fern enables businesses to offer “Stripe-level” SDKs (client libraries) and Docs for their REST API. Inspired by internal tooling we saw at AWS and Palantir, we’re building Fern to let every engineering team offer easy-to-use and well-documented APIs. Founded in 2022, we’re less than 10 people, building open source, and backed by YCombinator. We work together in our office in the Williamsburg neighborhood of Brooklyn, NY. Our customers include Cohere, ElevenLabs, Pinecone, Webflow, and Merge.dev.

Alpaca is an API infrastructure and licensed financial services company that allows developers and businesses to offer stock and crypto investing to their end-customers. We work with more than 100 companies across the globe to enable their investing products, and our mission is to provide financial services to everyone on the planet. Alpaca’s globally distributed team consists of developers, traders, and brokerage business specialists and backed by a group of well-capitalized investors including Portage Ventures, Spark Capital, Tribe Capital, Unbound, Social Leverage, Horizons Ventures, Y Combinator as well as highly experienced industry angel investors and founders. We are also very tech-enthusiastic with notable track records in open-source and startup communities.

Metoro is an observability platform specifically for service architectures running in Kubernetes. With no code changes or instrumentation you can get total observability into you clusters and the apps running inside of them. The entire installation takes < 10 minutes. Out of the box you get: Traces, Metrics (infrastructure, application and language level), Logs, Continuous profiling, Regression tracking, Network traffic inspection, Infrastructure monitoring, Alerting, Automated diagnostics

Hatchet abstracts away the infrastructure for managing task queues and message brokers, so you can focus on writing your background task and workflow logic. With Hatchet, you can run slow OpenAI requests in the background with async tasks, chain complex tasks together into workflows, and set retries and timeouts to recover from failure.

We help Enterprises transform their business processes with RPA workflows and enable structured data extraction from any document types (Intelligent Document Processing, IDP). Awesome YC deals for founders (check out us in 'Deals'). Connect any system, automate any process.

Titan is an open-source toolkit for data compliance. Data engineering teams trust Titan to simplify access management, ensure compliance, and minimize risk.

SST is an open-source framework that makes it easy to build modern full-stack applications on your own infrastructure.

Metaplane ensures everyone trusts the data that powers your business. Data teams at Bose, Ramp, and Klaviyo use our data observability platform to prevent and detect data issues — before the CEO pings them about weird revenue numbers. We do this with ML-based anomaly detection, end-to-end column-level lineage, and tools to help prevent incidents before they occur. You can monitor your entire data stack within 30 minutes. The company is backed by Khosla Ventures, Y Combinator, and the founders of Okta, HubSpot, and Vercel.

Ocular AI is the data annotation engine for Generative AI, Computer Vision, and Enterprise AI models. We help you transform unstructured, multi-modal data into golden datasets to power generative AI, frontier models, and computer vision. Ocular Foundry is the most intuitive, data-centric, and fastest platform that lets you label, annotate, version, and deploy your data for training models. It also orchestrates your annotation jobs, improving collaboration with members and annotators. With Ocular Bolt, shift from humans in the loop to experts in the loop to supercharge your data labeling and annotation projects. Our global expert workforce ensures fast, accurate results—no matter the scale or complexity of your data. Companies spend huge amounts on training data, but Foundry and Bolt are AI-native tools that lower costs, reduce manual effort, and accelerate high-quality data collection. We’re replacing outdated, clunky, and expensive data software!

Intuned is an AI enabled cloud platform to author, deploy, and monitor integrations to extract web data and execute browser automation. We enable engineers to build reliable integrations to access data and complete actions on other web services when official APIs are not available or complete.

Cedana (YC S23) enables real-time save, move and restore for compute workloads.  We expand GPU capacity, increase reliability, reduce latency up to 10x and increase CPU/GPU utilization up to 5x resulting in significant cost savings. OpenAI, Meta and Microsoft have flavors of these capabilities internally and we’re bringing them to everyone.  Our solution applies to AI training and inference, HPC, data analysis, dev tools and infra.  Our vision is to transform cloud compute into a real-time, arbitraged commodity.  We are a fully distributed remote company. https://www.cedana.ai

Webapp.io's custom hypervisor makes webapp CI/CD, E2E testing, and preview environments as simple as writing a Dockerfile. If your team is building a webapp + using github/gitlab/bitbucket, please reach out!

Mobot (YC W19) is a QA-as-a-service platform using actual mechanical robots to automate testing of repetitive functions on real mobile devices. Mobot's human-supervised robots make it possible to automate mobile app tests that emulators, virtual devices, and existing frameworks can't. This approach eliminates thousands of hours of manual testing, increases testing efficiency and physical device coverage, and captures more bugs in-app before app store launches than software can do alone.

Aviator is a developer tool that automates merge workflows and keeps builds healthy. Engineers save up to 5 hours a week and avoid frustration of broken builds. Our users include Slack, Bosch, Lightspeed, Square, Benchling, Figma and many others. For instance, Slack went from 180 master-build failures per quarter to just 1 build failure when they started using Aviator. Our goal is to become the leading brand for developer experience.

Retool is the fast way to build internal tools.

Roboflow enables developers to make the world programmable. Use our tools to build better datasets (collect image, video / annotate), models (foundation and fine tuned small models), and deployments (self hosted, edge, APIs, SDKs) for computer vision. Over 250k developers, including those from over half the Fortune 100, build with our open source and hosted tools. Build with us: https://app.roboflow.com Hack with us: https://roboflow.slab.com/public/posts/roboflow-hackathons-external-u478m1iz Work with us: roboflow.com/careers

Apollo GraphQL is the leader in open source and commercial GraphQL technologies. Apollo’s open-source GraphQL client, server, and gateway are downloaded more than 17M times per month and used in production by over 30% of the Fortune 500. Customers like Walmart, Expedia, Glassdoor, Audi, and PayPal, use the Apollo Graph Platform to unify their GraphQL efforts, collaborate on graph development, and safely iterate on their graphs. Based in San Francisco, Apollo is backed by Insight Partners, Andreessen Horowitz, Matrix Partners, Trinity Ventures, Y Combinator and individual investors.

Replit is the world-leading collaborative browser-based development environment -- learn, create & deploy! Join a community of 20m+ developers.

Everyone dreads the first few lines of code: choosing frameworks, designing UI/UX, setting up your project, integrating front-end with back-end… That's why we created Marblism: just describe your app, and voila! Here’s how the magic work: 1. Describe the product you want to build: it works well for SaaS, marketplaces, social apps and AI apps 2. We generate the database and the back-end 3. We generate the front-end 4. You clone the github repos and you’re ready to go The 90% heavy lifting work is done for you. You focus on adding your 10% unique touch. You can launch your idea in days not months.

Talc builds datasets 100x faster than human labels while outperforming humans in quality. We build custom datasets in any domain, and have replaced human labels for teams in fields ranging from Medical care to Insurance.

AssemblyAI is an applied AI company. We research, train, and deploy State-of-the-Art AI models for developers and product teams to integrate into their products/apps. Today, we offer AI models for audio transcription, content moderation, summarization, topic detection, and many other tasks. We are working towards building the "Stripe for AI models" - where developers and product teams will be able to easily access State-of-the-Art AI through a simple API. We're a fully remote team of AI researchers and ML engineers, and have raised over $65M in funding from top investors including Accel, Insight Partners, Y Combinator, John/Patrick Collison, Daniel Gross, and Nat Friedman.

Encord is the leading data development platform for advanced vision and multimodal AI teams. We build tools and infrastructure to help the world's leading AI teams get their models into production faster - with data-centric model testing, human-centric workflow and annotation tools for labeling & RLHF, and data curation and management software. Encord is trusted by pioneering AI teams at Stanford Medicine, Mass General Brigham, Tractable, Viz AI, Iterative Health, the UHN, the Royal Navy, Veo, and many more global companies.

OpenFoundry is an open source platform that helps engineers build, deploy, and scale their open source AI stack 10x faster. Ship your AI stack with just one line of code. You could think of us as an open source alternative to Hugging Face. Learn more and check out a demo of this in action in our Launch YC post: https://www.ycombinator.com/launches/KhY-openfoundry-developer-infrastructure-for-open-source-ai

Hypercard for iPad. Allows non-technical people to create media rich interactive apps like mobile games then publish them to the App store as native apps with out writing a single line of code.

Tegon is an open-source issue tracking tool that simplifies issue tracking for engineering teams. It is designed to be simple to use and super functional, addressing the complexities and slow nature of current tools. Existing issue tracking tools like Jira often act as a blocker in engineers' productivity by adding more processes and manual tasks, and they do not help engineers in resolving the bug faster or get full context about a specific tasks. Tegon is using AI and integrations smartly to automate task creation and updation and help engineers in task prioritisation and better bug resolution

HackerRank, the developer skills company, helps businesses attract, evaluate and hire the best technical talent from around the world. More than 2,800 customers across all industries, including over 25% of the Fortune 100, rely on HackerRank to raise their hiring bars. More than 18 million developers (approximately 40% of the global developer population) trust HackerRank to learn and showcase their coding skills. Every second, two developers complete a HackerRank code submission, or 185,000 per day.

Airbyte is the leading open data movement platform that empowers data teams in the AI era by transforming raw data into actionable intelligence. With the largest catalog of over 350 connectors, it offers low-code, no-code, and AI-powered connector development, and provides flexible deployment options across self-hosted, cloud, and hybrid environments. https://github.com/airbytehq/airbyte

Rutter is building a universal API for e-commerce platforms, accounting systems and payment processors. Similar to the financial market before Plaid, the world of business financial data is split across hundreds of platforms like e-commerce storefronts, marketplaces, accounting systems and payment processors, such as Shopify, Amazon, Quickbooks, Netsuite, Stripe and others. Each of these platforms has its own app store or its equivalent, and the enterprising developer must spend thousands of hours building integrations in order to access the entire market. Rutter is an integration layer for any company building integrations into commerce or accounting platforms. You can learn more about our universal API here: https://www.rutter.com/

Add a line of code and get thousands of icons and social logos on your website instantly. Easy to set up, easy to use, and crazy powerful. Let us take care of the icons so you can get back to the important stuff. Font Awesome. Go make something Awesome.

Parea AI is the essential developer platform for debugging and monitoring every stage of LLM application development. We provide testing, evaluation, and monitoring in one unified platform. These capabilities help developers get visibility into LLM responses, quickly test and optimize prompts, and ensure customers get the best user experience.

Silogy is building an AI-powered platform for chip developers to simulate and debug their designs.

From MIT's App Inventor and YCombinator's W2016 batch, Thunkable allows anyone to build powerful native apps. With Thunkable, it's simple to design, and simple to code-- simply drag and drop to create fast, native, reliable apps. You don't need to download large development suites, command-line kits, or simulators. You can use the many built-in app templates as they are, or make changes. Make your changes online and see them on your device instantly with the Thunkable mobile app. Upload your apps directly to the Play Store or App Store or send them to friends!

Daily is real-time voice, video, and AI for developers. Our cross-platform SDKs and global infrastructure enable ultra-low latency, highest quality experiences for developers building real-time voice and video AI agents. Our platform also supports integration of traditional voice/video calls, in addition to AI agent experiences.

Alokai is an award-winning and pioneering global technology startup setting a new standard in online shopping. Alokai is a Frontend as a Service solution that simplifies composable commerce. It connects all the technologies needed to build and deploy fast & scalable ecommerce frontends.Founded in 2021, Alokai (prev. Vue Storefront) is a best-in-class composable commerce solution and market-leading Frontend as a Service currently used by 3000+ live stores around the world. With a remote, global team of 100+ people and offices in San Francisco and Warsaw, Poland, customers include Movado, SPAR Inc., or Brompton Bikes. Supported by 130+ partners and a community of 10,000+ developers, Alokai and its leaders are recipients of several industry awards, including Europe’s top tech startup prize and recognition from Forbes magazine.

Never code up another test or hire an external QA team. We handle and automate all functional and E2E testing.

Tailor is a backend platform that helps enterprises build their custom, enterprise grade ERP applications with less code. **Team** Yo and Misato have previously built a retail-tech company together and sold it for $20M to Rakuten. Yo is a three-time-acquired serial entrepreneur with a McKinsey background. Misato is a previous head of R&D at Mercari. Tailor is the first YC company fully based in Japan. **The Problem** In today's business world, old ERP systems just don't keep up. Their monolithic architecture makes it difficult for developers to tailor to the specific needs, even though that's what the enterprises want for ERP. At the same time, legacy ERPs struggle to work well with the variety of cloud-based tools that modern businesses rely on. Legacy, monolithic systems make it very difficult to customize and hard to integrate. Every time the company wants to change something, it becomes a huge project. Building on these challenges, users of old ERP systems often face: * Hard-to-Use Interfaces: The screens and menus are old school... confusing, slowing down your work. * Wrong Set of Features: Too many unnecessary options for you and not enough of what you actually need. * Lack of Transparency: It's tough to understand what's happening behind the scenes. * High Cost: The expense of maintaining these systems eats into your budget. **The Solution** Why Headless? - With our headless product, the frontend is easy to customize for clients - API-first approach makes it easy to connect with other existing systems or 3rd party services What does it mean to our clients? - Faster development - Reduced maintenance cost - Well-documented backend APIs Tailor’s key capabilities: - GraphQL endpoint for flexible frontend development - Customizable data model templates to describe complex business logic of large enterprises - Customizable workflows depending on the client's specific business process - Directory service that can reflect complex organizational structure (e.g. matrix organization) to the workflow

Mux is an API-first video platform designed by experts to make world-class video streaming and analytics possible for every development team. Self-optimizing videos take the guesswork out of encodings, delivery, and renditions. Mux makes your video look beautiful on every device, every time. We offer two products, Mux Video and Mux Data. Mux Video is a simple API to advanced video streaming. Powered by data and designed by video experts, Mux Video makes beautiful video possible for every development team. Post a video or live stream with a single API call, and watch it within seconds. Mux Video handles the encoding, storage, and delivery. QoE and performance analytics provided by Mux Data is included by default for every Mux video stream.This real-time data is used to create the right renditions for every device and title, resulting in greater reliability and better viewer experiences. Mux Data is a Quality of Experience analytics platform that measures the performance metrics that actually matter to viewers: rebuffering, startup time, video quality, and errors. Our intuitive dashboard quickly gives users the insight to find issues and make improvements through features like A/B testing, industry-wide scores, alerts, and detailed information about every single video view. The product works out of the box on HTML5, iOS, Android, and major OTT platforms. All data is available via exports and APIs, making it easy to integrate Mux Data into other systems.

Briefer helps data scientists and analysts build interactive visualizations and data apps using a Notion-like interface. Connect to your data sources, write SQL or Python, collaborate through comments and multiplayer editing, and run code in whichever compute environments you need.

The leading open-source AI code assistant. You can connect any models and any context to build custom autocomplete and chat experiences inside the IDE

Bitrise helps you automate your daily app development tasks from building through testing to deployment. With Bitrise you can configure these tasks with a unique, visual workflow editor, with dozens of service integrations ready to roll. We call these steps, and they are all open source! If the step you need is not in our collection you can create your own and share it with others. Project Managers can get a clear picture of the development and testing of apps, testers get regular notifications about available, testable builds, and clients are able to collaborate with the rest of the team. Bitrise is free to get started and takes just 50 seconds to setup your first project.

MindsDB is a fast-growing AI startup headquartered in San Francisco, California. As a leading innovator bringing AI and Data together, our passion is empowering companies to easily build AI capabilities that can Think, Understand and Orchestrate: enabling teams to move from prototyping & experimentation to production in a fast & scalable way. MindsDB was founded in 2017 by Adam Carrigan and Jorge Torres, inspired by Ian M. Banks's Culture series, in which super AI systems called Minds collaborate with other forms of life to accomplish incredible goals. Starting as an Open-Source project, MindsDB has grown to be one of the most widely used AI-Data platforms in the world, with a growing community and more than 700 contributor developers from every corner of the globe. We are backed with over $55M in funding from Mayfield, Benchmark, YCombinator, and nVidia. MindsDB is also recognized by Forbes as one of America's most promising AI companies (2021) and by Gartner as a Cool Vendor for Data and AI (2022).

Terminal is Plaid for telematics data in commercial trucking. Companies building next generation insurance products, financial services and fleet software for trucking use our Universal API to access GPS data, speeding data and vehicle stats. Raghav (CEO) and Connor (CTO) led product and engineering at a series b-funded neobank where they spent 2.5 years integrating middleware APIs like Plaid & Stripe. Before that, Connor spent 3 years building software for his family-owned logistics company which was acquired by a private equity firm. Raghav’s family is in fleet operations and owns an HVAC company in San Francisco where they operate a fleet of 13 commercial vehicles.

We build the tools companies need to provide performant and scalable authorization for their applications. We’re founded by 3 successful entrepreneurs with expertise in enterprise software, most recently as leaders at Red Hat. Jake and Joey met on the APIs team at Google in 2010. They went on to found Quay, where Jimmy joined as their first hire. Over the past decade, they’ve changed the landscape for building and deploying software.

Corgea helps companies find and fix vulnerable code quicker, and save 80% of the engineering cost & time in fixing these issues. It does this by using AI to scan and write code fixes and issues pull-requests for your engineers to approve.

Repaint is a website builder with a design focus. Designers, startup founders, and small business owners use it to make professional websites without coding. We're modernizing website with an open drag-and-drop canvas and complete design freedom.

Rootly is a modern on-call and incident management platform used by top YC companies like Dropbox, Lattice, Webflow, Faire, but also Figma, LinkedIn, NVIDIA and 100s more.

Web3 developer platform to build, test, and scale blockchain applications. Lightning fast access to 44+ chains like Ethereum, Bitcoin, Solana, Polygon, Optimism, Arbitrum, Avalanche, Near, Stacks, Flow, Tron, zkSync and more. Elastic APIs, advanced ETL, storage (IPFS), powerful tools, analytics, and a 3rd-party marketplace -- all at your command through a simple control panel. Build your next big thing on-chain! Build it with QuickNode.

refine is an open-source, headless React framework for rapidly building enterprise web applications. It eliminates many repetitive tasks like ➡️ CRUD operations ➡️ State management ➡️ Routing ➡️ Authentication ➡️ Access Control ➡️ i18n and saves days of development time. So far, thousands of great projects have been built by 15,000+ monthly active refine developers. Use cases are ranging from admin panels, dashboards, and internal tools to B2B solutions and complex SaaS interfaces. refine is backed by a strong community featuring 16K GitHub stars ⭐️, 180+ contributors and 2,500 Discord members. Thanks to it's unique "Headless UI" approach, refine works with any custom design. It has also ready-made integrations with 4 most popular UI frameworks: Ant Design, Material UI, Chakra UI and Mantine. refine is totally backend agnostic and it can connect to 15+ backend services out-of-the-box, incl. custom REST & GraphQL API's. With refine, developers always have 100% control over their projects as they build, style and deploy the way they like.

Build AI assistants that continually learn and delight users with personalized and accurate experiences. ## Memory that learns from your users Zep intelligently learns from user interactions, improving your assistant or agent's knowledge over time. Recall user facts in milliseconds, with Zep adding no latency to your prompt creation. ## Ready for Production and Scale - Granular Memory Controls: Go beyond semantic search with developer-defined rubrics for user fact relevance. - Comprehensive APIs and SDKs: Python, TypeScript, and Go SDKs, with full CRUD control of stored facts. - SOC 2 and tools for Privacy Compliance. ## Build Consistent and Correct LLM Apps Zep's Structured Output and Dialog Classification tools build on Zep's memory enabling you to build more accurate and consistent user experiences. - Extract strongly-typed data from chat history, quickly & accurately: Go beyond your LLM provider's JSON or Structured Output mode with built-in types for datetimes, floats, emails, RegEx patterns, and more. - Instantly classify conversation state: Understand user intent and emotion, segment users, and more.

Open source voice AI. Check out our docs for more information: https://docs.vocode.dev

GitStart accelerates software engineers with Pull Requests as a Service. Assign tickets to GitStart Bot, go to sleep, and wake up with PRs. GitStart Bot automatically manages thousands of AI models and full-time engineers and runs peer reviews until PRs are ready to be merged. It’s scalable, flexible, and quality is guaranteed: you only pay for merged PRs.

OneSchema is the embeddable CSV importer used by product and engineering teams to save months of development time and to automate CSV mapping, validation, and transformation.

Tiptap is a suite of open source content editing and real-time collaboration tools for developers building apps like Notion or Google Docs. It’s used by thousands of businesses worldwide, including LinkedIn, GitLab, Axios, and Anthropic.

Artie is software that streams data from databases to data warehouses in real-time. Today, most companies run their ETL process every few hours or overnight, so their data warehouse is always out of date; with Artie, the warehouse always has live production data.

Infracost shifts cloud costs left and makes FinOps proactive. It sits in the engineering workflow (CI/CD), and shows the cost impact of code changes (IaC) before the code is shipped to production. This catches costly mistakes before any money has been spent. It also checks to make sure all resources are tagged with your set tagging policy, and runs checks on the code against our FinOps policy packs, ensuring best practices are followed (e.g. GP2 volumes should be GP3). This creates a cost-aware engineering culture.

We're building a visual application development platform to dramatically improve the time to market and quality of digital experiences. FlutterFlow helps companies and product teams improve developer efficiency, accelerate project timelines, and reduce costs for large-scale business applications. Our customers include some of the largest banking, consulting, telecom, and manufacturing companies in the world. We have more than 1.3M users in more than 200 countries and regions around the world. We’re a remote first team headquartered in the San Francisco Bay Area. We have offices in Mountain View, New York City, and Singapore.

Unlayer makes embeddable email and web editing software. We provide the essential editing tools that companies need to create successful marketing and engagement campaigns. If you want to add a rich email template editor, web page builder, or popup builder into your application, try Unlayer.

Evidence is an open source, code-based alternative to drag-and-drop BI tools. Build polished data products with just SQL and markdown.

We make it easy to watch everything happening in your servers by tracking the API requests coming in / going out and storing this data in ClickHouse. Later, when you're solving a problem in production, you can filter for the requests you care about using simple SQL queries and dig into the details. You'll never have to print() a HTTP request again.

Mezmo, formerly LogDNA, is an observability platform to manage and take action on your data. It ingests, processes, and routes log data to fuel enterprise-level application development and delivery, security, and compliance use cases. Mezmo was brought to life by three-time co-founders Chris Nguyen and Lee Liu and included in the Winter 2015 batch of Y Combinator. In 2018 the company partnered with tech giant, IBM, to become the sole logging provider for IBM Cloud. Mezmo is on a mission to empower people who build solutions that shape the world. We’re doing this by delivering a platform that enables enterprises to get more value from their observability data in real time, regardless of source, destination, use case, or scale. We’re not the only ones working on this problem but we have a few things the others don’t. We’re cloud-native and know how to make the most of modern technology like Kubernetes. We have scaled a solution from zero to petabyte scale in a short amount of time, while supporting thousands of active users across multiple environments. We are hungry for change and are surrounded by enterprises telling us they’re hungry, too. We have a kick-ass group of people who are thinking about the problem analytically and are excited to change the observability world for the better. Mezmo has helped some of the world’s most innovative companies transform how they manage their systems and applications. Still, we know that we can help them get more value from their observability data by providing more flexibility and control over how they use it. This will enable teams to spend less time switching between data silos so they can focus on shipping better, more resilient, and secure products. We have momentum on our side. Last year we saw triple digit revenue growth and added 800 new customers to our roster. Recent accolades include being named to YC’s Top Companies, CRN’s 10 Hottest DevOps Startups, and EMA’s Top 3 Observability Platforms.

Cosmic is a headless CMS and API toolkit to help teams build modern apps faster, together. We provide a web dashboard to create content and API tools to deliver content into any website or app. Teams benefit from using Cosmic because it eliminates the need to build and maintain their own CMS infrastructure. Teams pay a monthly subscription fee for our hosted CMS and can focus on their application logic, creating great content, and enhancing user experiences.

Infisical is an open-source platform to manage secrets and configs across your team and infrastructure. Infisical stores your secrets and injects them back into your development workflow, CI/CD pipelines, and cloud infrastructure. It comes with secrets versioning, point-in-time recovery, audit logging, automatic secret rotation capabilities, and more.

We are building an AI software developer that can solve complex tasks. All of those bugs, sentry errors, feature requests can now be handled by Fume now. Just report them over Slack and tag Fume under it. Fume will solve all of them in minutes. If you find yourself copying and pasting code over to ChatGPT all the time, shoot me an email at emre@fumedev.com

renderlet is a framework that makes it easy to develop interactive applications. Building applications with high-performance graphics is very hard – existing tools are cumbersome and aren’t truly platform agnostic, leading to frequent rework. With renderlet, developers can write high-level code to describe 2D and 3D graphics without having to use low-level, platform-specific APIs. renderlet automatically compiles graphics code to WebAssembly and embeds a portable rendering engine inside any app, enabling graphics to safely and automatically render on any platform’s GPU. Our runtime is open-source: https://github.com/renderlet/wander

Promptless automatically updates your customer-facing documentation, including tutorials, how-to guides, API specs, knowledge bases, support articles, and blog posts. This content is often one of the first points of contact between your product and its users. Clear, accurate, and up-to-date docs are critical, influencing buying decisions, reducing support overhead, and increasing LTV. Providers like Readme and Mintlify effectively host your docs, but keeping them updated remains a serious challenge. Working alongside your hosting provider, Promptless lets you configure triggers so that your docs get automatically updated upon new feature releases, developer support questions, or internal use-case discussions. Promptless integrates directly with your organization’s entire knowledge ecosystem – issue trackers, internal knowledge bases, support ticket systems, and more – leading to holistic doc updates without expensive coordination between product, engineering, and support teams. With Promptless, documentation becomes a strategic advantage for growth, not a bottleneck or a liability.

Designbase is the interface design tool that gives early teams design and development superpowers. Create stunning interfaces, immediately available as code, regardless of resources.

Dragoneye helps devs build powerful apps and features that use images and videos. With our cutting-edge AI tech, folks can recognize things in the world with high accuracy and deep granularity - more than 13K classes - right out of the box. No more arduous process of annotating any training data or doing any machine learning work themselves. Try out our demo today at https://dashboard.dragoneye.ai/!

Metalware builds cybersecurity tools for firmware. We fuzz and detect security and reliability issues in software running on drones, satellites, medical devices, electric vehicles, industrial controllers, and more.

Traceloop monitors the quality of your LLM application in production. It provides you with alerts, insights and gradual rollout capabilities to confidently deploy changes to your prompts and model configurations.

Reflex is the open-source framework empowering Python developers to build web apps faster. Build both your frontend and backend in a single language, Python (pip install reflex), with no JavaScript or web development experience required. Build anything from internal data and AI apps to large public-facing web apps and deploy with a single command (reflex deploy). Reflex provides high-level UI components, easy deployment and AI agents to create, edit, and deploy apps 10x faster than traditional web development while also remaining extensible through custom components that can fully leverage JavaScript's expressivity. Our mission is to simplify web development by creating an ecosystem of open-source tools and hosted services that enable Python developers to build web apps faster without compromising on customizability, flexibility, or performance. https://github.com/reflex-dev/reflex

Create durable background jobs directly in your codebase with no timeouts. Previously, the founders built JSON Hero, an open source JSON viewer that is currently used by more than 35k developers a month. Eric was CTO of Code School, an early code learning platform that was acquired in 2015. Matt created two iPad apps that won Apple’s App of the Year.

Open-source alternative to FullStory and LogRocket. Self-hosted for a complete control over your data and costs.

SnapTrade is an API to connect retail brokerage accounts to any fintech app. We enable API access to real-time account data, historical transactions, and trading. This makes it possible to build new investing experiences with existing brokerage accounts, so users don't need to transfer and it's easier to get started.

Doctor Droid is an automated diagnosis and troubleshooting assistant for engineering teams. Doctor Droid integrates with your existing monitoring stack (10+ tools supported) and assists with automated diagnosis, troubleshooting recommendations and more. Get started To get an automated report on the state of alerting & noise in your company, try out our free report generator today -- https://drdroid.io/doctor-droid-slack-integration

ReadMe provides every company the ability to easily create beautiful documentation, and build loyal, productive developer communities. With ReadMe, build developer portals that combine support, tutorials, topical guides and API exploration. ReadMe makes it trivial to keep docs up-to-date and has community oriented features that help drive adoption. Wanna see what it'd look like to work at ReadMe? Our careers page takes a stab at it! https://readme.com/careers

Million is an APM that makes websites fast, automatically. We use AI to automatically find performance issues and write code to fix them.

Magic Patterns helps software teams prototype their product ideas. Startups in the current batch and enterprises use us to create designs quickly and ship faster.

Depot is a build acceleration platform making builds up to 40x faster for Docker containers and GitHub Actions. Companies like PostHog, Wistia, Appsmith, and Secoda use Depot to save tens of hours of build time every day. We offer a remote container build service for building Intel & Arm Docker images, from your CI or local machine, up to 40x faster. Our container builds come with in-depth build insights, ephemeral registries, and instant cache sharing across your team. Finally, we also offer our own Depot GitHub Actions Runners that brings all the speed of Depot to your entire GitHub Actions workflow at half the cost of GitHub-hosted runners, and up to 10x faster builds. Simply change the runs-on label of your existing workflow to route jobs to Depot runners. Kyle and Jacob worked together as staff engineers for 4.5 years at Thorn and Era Software, before founding Depot. Depot is their solution to the wildly inefficient container build tooling and non-performant CI systems they encountered throughout their careers.

Your central source of truth from local development to production for every language, stack, and infrastructure.

Quack AI tackles the slowdown in project delivery often faced by expanding dev teams. We bring development teams into sync, effortlessly aligning code with project expectations. Take the example of the backend team now adopting the syntax of Python 3.11 for asynchronous tasks. Our deep learning model swiftly interprets these updates and embeds them into every developer's keystroke with our VSCode extension, significantly reducing code review iterations and shaping a cohesive & adaptable coding identity.

Sizeless is a platform to help ML teams automatically run, test and improve their models to make ML reproducible and safe. Currently, ML engineers do this manually which takes weeks - we automate this down to a few clicks. ML engineers at Google shopping and computer vision startups are using our platform to shorten their ML development cycle and continuously monitor and fine tune their models. We provide ML engineers with a productivity tool set, so that they can focus on building great ML models. We developed this tool during our PhDs (Cornelius in ML at ETH Zurich and Roger in astrophysics at Cambridge), saving us and our PhD colleagues around 2 weeks per model while generating actionable insights. We launched 10 days ago, have 5 daily active users like ML engineering teams at Google Shopping and in computer vision startups and more than 50 sign ups on our waitlist. We provide ML engineers with a productivity tool set, so that they can focus on building great ML models.

Apoxy is the proxy platform for improving the security, observability, and usability of APIs and services at scale. Our programmable proxy allows developers to write code that handles the operational concerns of their applications rather than piles of configuration. We've built an ingress and egress traffic controller with a tool belt of extensions that solve common problems like monitoring, authentication, load balancing, data compatibility, and much more.

Goodbye Slurm, Hello Konduktor. Trainy Konduktor is a software platform for AI teams to schedule workloads with priority, control resource allocation, and improve GPU reliability. With Konduktor, teams submit jobs to a healthy pool of GPUs, assign job priority with a simple user interface, and never worry about hardware faults again.

Lynx is an AI platform that investigates and resolves engineering issues directly in your environment, from data anomalies to production outages. When incidents arise, Lynx will automatically gather information, pinpoint root causes, and execute solutions. Lynx makes incident resolution faster and more reliable, so teams can minimize downtime and focus on building.