Best Free & Open Source Alternatives to Obsidian
Looking for a free or self-hosted alternative to Obsidian? Below you'll find the best open source options — community-driven tools that let you own your data without vendor lock-in or recurring subscription costs.
Obsidian is a private, flexible note-taking app—designed to sharpen your thinking by letting you store and link ideas securely on your own device. It offers powerful organization tools like bidirectional note linking, an interactive graph view, a highly customizable interface with thousands of plugins and themes, and an open file format so you truly own your data.
memos
A modern, open-source, self-hosted knowledge management and note-taking platform designed for privacy-conscious users and organizations.
Obsidian
TriliumNext Notes
Hierarchical personal knowledge base with powerful note-taking, rich text editing, and scripting capabilities.
Notion
SilverBullet
Markdown-based note-taking app with powerful live queries, templates, and a pluggable scripting system for power users.
Notion Obsidian
Obsidian is a private, flexible note-taking app—designed to sharpen your thinking by letting you store and link ideas securely on your own device. It offers powerful organization tools like bidirectional note linking, an interactive graph view, a highly customizable interface with thousands of plugins and themes, and an open file format so you truly own your data.