Laying out the streets…STEP 1 OF 3

Betelgeuse · Office #56,035

Open-Source Markdown Notes & Docs App

In the Notes and remembering neighborhood (Personal). In town since 30 Oct 2026.

Nobody has claimed this office yet. Tablif records every new product and gives it an office; when its owner claims it, the lights go on.

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What Tablif read on Betelgeuse's site

Betelgeuse describes itself as: “Open-Source Markdown Notes & Docs App | Betelgeuse”

What it is

Calls itself “notes, docs and databases”.

  • Calls itself: notes, docs and databases
“Free, open-source app for notes, docs and databases.”

Where it puts itself

Positions itself as an alternative to Notion. Rules out “account”.

  • Alternative to: Notion
  • Says it will not: account
“The blocks and databases you're used to, without the cloud”
“If you know Notion, you know this.”

What it costs

A free tier, free forever. No monthly plan.

  • Monthly: no
  • Free plan: free forever
“Your knowledge deserves a home, not a subscription.”
“Is it really free? Yes. It's open source under the MIT license, with no account, subscription or paid tier.”
“Free, open-source app for notes, docs and databases.”

Who it sells to

Sells to consumers.

  • Sells to: consumers
“Built by people who believe your data should be free.”

How it runs

A desktop app and mobile app for Android, Linux, Windows and macOS. Runs locally and works offline. Offers an API. Open source. AI is a side feature.

  • Kind: desktop · mobile
  • Runs on: Android · Linux · Windows · +1
  • Runs where: on the device, offline
  • API: yes
  • Open source: yes
  • AI role: a side feature
“…macOS Windows Linux Android preview iOS soon”
“Android preview”

What it works with

Replaces Notion. Built on git. Names Claude Code and Claude Desktop on its pages.

  • Replaces: Notion
  • Built on: git
  • Names: Claude Code · Claude Desktop
“Betelgeuse Features Plugins AI agents Docs”
“Works with Claude Code”

What it offers as proof

Live, no waitlist. Try it without signing up. Publishes docs.

  • Trial asks for: nothing
“Download — free Explore on GitHub 3 macOS · Windows · Linux · Android preview · MIT licensed · No account required”
“Docs -> https://betelgeuse.devianlabs.com/docs/”

Sources

Tablif read these pages, last on 30 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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