memos vs Outline
Comparing two open source alternatives to Notion. Use the comparison below to decide which one fits your needs.
memos
MITPrivacy-first, self-hosted note-taking platform with markdown support, tagging, and built-in AI — a lightweight alternative to Notion and Obsidian.
Outline
BSL-1.1The fastest growing-team knowledge base — beautiful, realtime collaborative, feature packed, and markdown compatible Notion and Confluence alternative.
Side-by-side comparison
| memos | Outline | |
|---|---|---|
| License | MIT | BSL-1.1 |
| Self-hostable | Yes | Yes |
| GitHub Stars | 63,189 | 40,632 |
| Forks | 4,772 | 3,570 |
| Open Issues | 65 | 76 |
| Last Commit | Sep 20, 2026 | Sep 19, 2026 |
| First Released | Dec 8, 2021 | May 22, 2016 |
| 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
AFFiNE
Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.
Notion
SilverBullet
Markdown-based note-taking app with powerful live queries, templates, and a pluggable scripting system for power users.
Notion
Huly
All-in-one open source platform that combines project management, CRM, chat, HR, and wiki as an alternative to Linear, Jira, Slack, and Notion.
Notion