Ocean Brain

Self-hosted writing space for connected notes with backlinks and MCP integration

Webfree

Ocean Brain is a self-hosted note-taking application built around a block editor where references between notes automatically become backlinks, with tags, typed properties, and a graph view available as structure is needed. It is aimed at individuals doing research or project work who want a self-hosted alternative to cloud knowledge-base apps, deployable with a single command or Docker, and it includes an MCP integration for AI clients.

Website

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Behind the summary, Matchbox keeps a richer profile of Ocean 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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