SecondBrain

Personal knowledge base that organizes what you feed it and answers questions with sources.

Desktopfreeglobal

SecondBrain is a free, open-source personal knowledge base that lives in a local folder, automatically organizing whatever content is fed into it and answering questions with sourced answers, through Claude Code slash commands or a local dashboard. It's aimed at people who want their reading and notes organized automatically instead of by hand.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of SecondBrain - 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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