Home / Productivity Tool / Obsidian Productivity Tool Obsidian — Local-first knowledge base Markdown notes on your own disk with graph links and plugins — thinking tools that outlive any SaaS. Official links obsidian.md Obsidian features L Local-First Trait Data lives on the device first Obsidian implements A API Trait Application Programming Interface Obsidian runs on M macOS Operative System W Windows Operative System