Mnemo vs OpenKnowledge

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

Mnemo

Apache-2.0

Mnemo is a free, open-source desktop study app combining block-based notes, FSRS flashcards, and mind maps with no accounts or tracking.

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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

	Mnemo	OpenKnowledge
License	Apache-2.0	GPL-3.0
Self-hostable	No	Yes
GitHub Stars	95	4,428
Forks	9	297
Open Issues	7	51
Last Commit	Oct 9, 2026	Oct 8, 2026
First Released	Jul 30, 2025	Jun 3, 2026
Categories	Study & Flashcard Tools Note Taking & Knowledge Management Tools Mind Mapping	Note Taking & Knowledge Management Tools
Tags	#flashcards #spaced-repetition #notes #knowledge-management #local-first	#markdown #notes #ai #second-brain #agents

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