← overview

How Mimir compares

Not a "we're better" page. Mimir is young — one serving daemon, one seeded compartment, zero embedded chunks — sitting next to tools that have shipped for years to millions of people, and next to a from-scratch weekend build that undercuts it on cost. The honest comparison is a capability matrix: what each system does, what it does not, and where Mimir is still behind rather than ahead. Where Mimir is genuinely ahead, that's stated too, and it's usually the governance row, not the polish rows — see the governance walkthrough for what that row actually looks like in a live response.

Grounded, not guessed. Every claim about the other eight systems traces to our research — a field survey of eighteen schools of thought in personal knowledge management, plus a tools-and-stacks catalog compiled from it — or to Mimir's own internal documentation. The one exception is the Rewind/Limitless column: that product category wasn't part of the eighteen-school survey, so its cells are grounded only in well-known public product claims, hedged accordingly, and marked partial rather than a confident yes wherever the underlying architecture isn't independently documented. Nothing below is a fabricated statistic — where our research didn't cover a claim precisely, the cell says — or partial instead of guessing a yes.

✓ ships, verified partial half-built, or one of the two halves — not present planned designed, not shipped

Capability	Mimir	Obsidian	Notion	Mem	Rewind / Limitless	NotebookLM	Roam / Logseq	MS GraphRAG stacks	OpenBrain (OB1)
Capture (text / voice / file)	✓	✓	✓	✓	✓	partial	✓	—	partial
Semantic + lexical retrieval	partial	partial	partial	partial	partial	✓	partial	✓	partial
Provenance / citations	✓	—	—	—	partial	✓	partial	partial	—
Knowledge graph	partial	partial	—	—	—	—	✓	✓	—
Governance / compulsory lenses	✓	—	—	—	—	—	—	—	—
Agent-native API / memory	partial	partial	partial	—	—	—	partial	partial	✓
Push / resurfacing	partial	—	—	partial	—	—	—	—	partial
Tagging / facets	✓	partial	✓	partial	—	—	partial	—	partial
Privacy tiers	partial	partial	partial	—	partial	—	—	—	—
Self-hosting	✓	✓	—	—	—	—	partial	✓	partial
Versioned docs	✓	—	—	—	—	—	—	—	—
Transcription-aware glossary planned	planned	—	—	—	—	—	—	—	—
Federated sources planned	planned	partial	partial	—	—	—	—	partial	✓

Click a system's name to read the half-page version: what it is, what it's genuinely great at, where Mimir overlaps, what Mimir adds, and — stated as plainly as everything else on this site — what that system still does better than Mimir today.