Outline vs Puppyone
Comparing two open source alternatives to Notion. Use the comparison below to decide which one fits your needs.
Outline
BSL-1.1The fastest growing-team knowledge base — beautiful, realtime collaborative, feature packed, and markdown compatible Notion and Confluence alternative.
Puppyone
Apache-2.0Open source local-first editor for Markdown, docs, rich files, and AI agents — with built-in terminal and Git review.
Side-by-side comparison
| Outline | Puppyone | |
|---|---|---|
| License | BSL-1.1 | Apache-2.0 |
| Self-hostable | Yes | Yes |
| GitHub Stars | 40,925 | 1,312 |
| Forks | 3,619 | 131 |
| Open Issues | 75 | 5 |
| Last Commit | Oct 16, 2026 | Oct 14, 2026 |
| First Released | May 22, 2016 | Jun 29, 2026 |
| Categories | ||
| Tags |
GitHub stars over time
GitHub stars over time
Similar open source alternatives
AppFlowy
Open source Notion alternative that brings projects, wikis, and teams together with AI while keeping you in control of your data.
Notion
HelixNotes
A fast, privacy-first local markdown note-taking app built with Tauri and SvelteKit. Your notes stay as plain .md files on your device.
Obsidian
Jotty
Lightweight self-hosted app for managing personal file-based notes and checklists.
Notion
memos
Privacy-first, self-hosted note-taking platform with markdown support, tagging, and built-in AI — a lightweight alternative to Notion and Obsidian.
Obsidian
AFFiNE
Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.
Notion
SilverBullet
Self-hosted, programmable knowledge base: plain Markdown notes with live queries, backlinks, and an embedded Lua scripting runtime.
Notion