Personal External Brain

Turns your notes, PDFs, and audio/video into a local, private knowledge graph

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Personal External Brain is a local-first tool that turns your notes, web pages, PDFs, and audio or video into a personal knowledge graph running entirely on your own machine, combining a graph database with vector search. It's for people who want their notes and documents connected and searchable without sending them to a cloud AI service.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of Personal External Brain - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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