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Char

Open source AI notepad for meetings

Char is an open source Granola alternative that never locks you in. It's local-first and filesystem-based like Obsidian. Also, it provides ways to use on-device AI models or BYOK.
Active Founders
John Jeong
John Jeong
Co-founder, Co-CEO
Co-founder & Co-CEO @ Char
Yujong Lee
Yujong Lee
Founder
OSS enthusiast. Check out my work at: https://github.com/yujonglee
Former Founders
Deokhaeng Lee
Deokhaeng Lee
Founder
CS @ Duke Formerly founder @ Hyprnote (S25), engineering @ Carousel Technologies (W24)
Company Launches
Hyprnote⚡️ Open-source AI notetaker for enterprises
See original launch post

TL;DR

Hyprnote is an open-source AI notetaker for enterprises. It transcribes and summarizes meetings while keeping 100% of data on-device or on-prem — so companies stay in control.

https://www.youtube.com/watch?v=x4TRi2WOR5s

Why Existing AI Notetakers Fail

Every other tool ships your conversations off to 3rd party clouds. Enterprises banned them because they violated data sovereignty.

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How Hyprnote Flips the Script

Hyprnote runs entirely on your laptop, server, or air-gapped network:

  • Private by default: not a single byte leaves your system, ever.
  • AI-powered notes: clear, actionable summaries.
  • Enterprise-ready: HIPAA, SOC2, ITAR, FedRAMP-friendly.
  • Open source: transparent and extensible.
  • Flexible deployment: run it where you want.

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Why We Built This

We saw enterprise employees stuck taking manual notes because “AI notetakers” weren’t actually enterprise-ready. Hyprnote exists so teams can finally use AI without giving up control of their data.

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What You Can Do

1/ Introduce us to VPs or Directors driving digital transformation in regulated industries.

2/ Start using it FREE FOREVER — and spread the word.

3/ Star us on GitHub!

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NEED an AI notetaker you can actually trust?

Try Hyprnote — where conversation stay yours

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YC Photos
Char
Founded:2023
Batch:Summer 2025
Team Size:4
Status:
Active
Primary Partner:Brad Flora