memos vs OpenKnowledge

Comparing two open source alternatives to Obsidian and Notion . Use the comparison below to decide which one fits your needs.

memos

MIT

Privacy-first, self-hosted note-taking platform with markdown support, tagging, and built-in AI — a lightweight alternative to Notion and Obsidian.

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OpenKnowledge

GPL-3.0

AI-native, local-first markdown editor and LLM wiki with built-in integrations for Claude, Codex, and other agents.

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Side-by-side comparison

	memos	OpenKnowledge
License	MIT	GPL-3.0
Self-hostable	Yes	Yes
GitHub Stars	62,153	3,411
Forks	4,638	215
Open Issues	31	31
Last Commit	Aug 10, 2026	Aug 12, 2026
First Released	Dec 8, 2021	Jun 3, 2026
Categories	Note Taking & Knowledge Management Tools	Note Taking & Knowledge Management Tools
Tags	#markdown #memo #note taking #microblog	#markdown #notes #ai #second-brain #agents

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