Atomic vs Wiki.js

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

Atomic

MIT

A self-hosted personal knowledge base that turns markdown notes into an AI-augmented knowledge graph with semantic search and wiki synthesis.

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Wiki.js

AGPL-3.0

Wiki.js is a modern, powerful open-source wiki app built on Node.js. Versioned, searchable, beautiful, and self-hosted — a knowledge base for any team, big or small.

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Side-by-side comparison

	Atomic	Wiki.js
License	MIT	AGPL-3.0
Self-hostable	Yes	No
GitHub Stars	2,000	29,216
Forks	143	3,353
Open Issues	36	9
Last Commit	Sep 29, 2026	Nov 8, 2026
First Released	Nov 25, 2025	Aug 16, 2016
Categories	Note Taking & Knowledge Management Tools	Wiki Software Internal Knowledge Base Knowledge Management Tools
Tags	#note taking #markdown #knowledge-management #LLM #local ai	#markdown #documentation #wiki

GitHub stars over time

Atomic2,000

Wiki.js

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