Free & open-source alternatives to Obsidian

5 free apps you can use instead of Obsidian, open source first.

SiYuan

Productivity Open Source

47k

Organize your knowledge with block-level references and Markdown

WindowsmacOSAndroid +2 4 days ago

Logseq

Productivity Open Source

46k

Privacy-first outliner for building your personal knowledge base

WindowsmacOSAndroid +2 last month

Zettlr

Productivity Open Source

14k

Write, manage notes, and publish academic texts using Markdown

WindowsmacOSLinux 11 hours ago

NoteGen

Productivity Open Source

13k

Local-first Markdown notes app that uses AI to organize your records

WindowsmacOSAndroid +1 2 weeks ago

Anytype

Productivity Open Source

9.1k

Build a local-first personal knowledge base with end-to-end encryption

WindowsmacOSLinux 4 days ago