Trilium

• Source: https://github.com/TriliumNext/Notes
• License: AGPL-3
• Alternatives: Logseq, Obsidian, AppFlowy, Joplin
• Status: RIP — lacks proper markdown support

Features

• Hierarchical Note Tree: Organize notes in a deeply nested tree structure
• Note Attributes & Relations: Tag notes with key-value attributes and link them relationally
• Scripting: Automate and extend behavior with JavaScript-based scripts
• Note History: Full version history with diff view for every note
• Self-Hosted: Web interface plus an optional desktop app (sync server built-in)