Betelgeuse
Open-Source Markdown Notes & Docs App
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Free, open-source app for notes, docs and databases. Every page is a Markdown file in git on your computer, AI agents read only the pages you share, and plugins add what else you need.
PH · launched Oct 30, 2026 · 2 upvotes (top 22%) · 0 views
Niche: markdown editors and viewers · 158 launches, 13 in the last 7 days ▲ +30% · Explore this niche →
Category and tags
- Horizontal
- Workflow automation
- Prosumer
- Not AI
- Hobby / open-source project
- Productivity
- Open Source
- GitHub
Visit website ↗ Source listing ↗
More like this: all 158 launches in markdown editors and viewers →
Could you build this?
Yes It is a Markdown notes app with git-backed storage, a plugin system, and selective AI access, which is a well-trodden pattern similar to existing open-source note tools.
Competitors
Other products that read as similar to this one : 463 launches clear the similarity bar, closest 8 shown.
Attention rank: #96 of 464 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 351 days after the earliest competitor.
- NoteGen · ph · 2026-10-19 · 1 upvotes · similarity 0.59
- VB Notes · ph · 2026-11-14 · 71 upvotes · similarity 0.57
- Markling · ph · 2026-09-17 · 1 upvotes · similarity 0.54
- blocks · ph · 2026-11-07 · 1 upvotes · similarity 0.53
- A simple Markdown note app with templates and PDF support · hn · 2025-12-02 · 5 upvotes · similarity 0.53
- Plainkeep · ph · 2026-11-01 · 2 upvotes · similarity 0.53
- Branchnote · ph · 2026-11-14 · 1 upvotes · similarity 0.52
- Lisible · ph · 2026-10-11 · 1 upvotes · similarity 0.51
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.