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Logseq

An open-source outliner notebook for knowledge management.

Logseq stores notes as plain Markdown or Org-mode files in a local folder, organised as a daily journal of bullet outlines and a graph of bidirectional links between pages. The combination is a self-hosted alternative to Roam Research and to the (proprietary) Obsidian.

The outlining model — every note is a bullet that can be nested, embedded in another page via block reference, or queried with a small Datalog-like query language — makes Logseq particularly well suited to "thinking in fragments" rather than writing complete documents. Plugins extend it with Anki-style flashcards, Excalidraw-based whiteboards, and many other features.

Tienson Qin started Logseq in 2020. The project is AGPL-licensed, with the core team funded through a hosted "Logseq Sync" service plus enterprise contracts. Adoption among researchers, academics, and "personal knowledge management" enthusiasts has been growing steadily.

AppImage / .deb / Flatpak / Snap from https://github.com/logseq/logseq/releases
macOS: brew install --cask logseq