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LemmaLogseq
Free

Free and open source under the GPL-3.0-or-later licence, with optional donations.

 Freemium

The app is free and open source under the AGPL 3.0. Logseq Sync is a paid service, and…

Linux Windows, macOS, Linux, Android, iOS
  • Inline math entry with LaTeX-like autocomplete
  • Wiki-style linking with backlinks
  • Notes are plain Markdown files in a folder you control
  • Block-level linking and embedding, not just page links
  • Linux only
  • No sync described on the homepage
  • The database version is in beta and the project warns data loss is possible
  • Outliner structure does not suit long-form prose
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-or-later License: AGPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 1, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.