Atomic vs HedgeDoc
Comparing two open source alternatives to Notion . Use the comparison below to decide which one fits your needs.
Atomic
MITA self-hosted personal knowledge base that turns markdown notes into an AI-augmented knowledge graph with semantic search and wiki synthesis.
HedgeDoc
AGPL-3.0Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.
Side-by-side comparison
| Atomic | HedgeDoc | |
|---|---|---|
| License | MIT | AGPL-3.0 |
| Self-hostable | Yes | Yes |
| GitHub Stars | 1,446 | 7,162 |
| Forks | 99 | 551 |
| Open Issues | 30 | 286 |
| Last Commit | May 11, 2026 | May 12, 2026 |
| First Released | Nov 25, 2025 | Mar 27, 2019 |
| Categories | ||
| Tags |
Similar open source alternatives
Etherpad
Open-source real-time collaborative text editor you can self-host.
Google Docs
Jotty
Lightweight self-hosted app for managing personal file-based notes and checklists.
Notion
ONLYOFFICE
Self-hosted office suite with real-time collaboration.
Google Docs
CryptPad
End-to-end encrypted collaborative office suite with zero-knowledge privacy.
Google Docs
memos
A modern, open-source, self-hosted knowledge management and note-taking platform designed for privacy-conscious users and organizations.
Obsidian
AFFiNE
Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.
Notion