Obsidian
Build a local Markdown knowledge base with linked notes and canvases.
Overview
Obsidian stores notes as local Markdown files with links, graph views and canvases. Install the app and create a vault in a folder you control. Add community plugins deliberately and keep a backup; optional Sync and Publish services are separate from the core application.
Knowledge · Markdown · Notes
Install for free from the official publisher
Original source & installation instructions
The core app is free. It is not an AI-model subscription; AI features, if desired, come from separately configured integrations.