Trilium Notes is a free open-source hierarchical note-taking application with focus on building large personal knowledge bases.

It comes packed with dozens of useful future to aid all kind of users. As its primary goal to build a knowledge base, it can be used by creative writers, to write novels, librarians, developers and and editors.


  • Rich WYSIWYG note editing including e.g. tables, images and math with markdown autoformat
  • Multi-languages support
  • Support for editing notes with source code, including syntax highlighting
  • Note specific relations
  • Comes with a built-in code editor
  • Notes can be arranged into arbitrarily deep tree
  • A single note can be placed into multiple places in the tree (see cloning)
  • Fast and easy navigation between notes, full text search and note hoisting
  • Seamless note versioning
  • Note attributes can be used for note organization, querying and advanced scripting
  • Synchronization with self-hosted sync server
  • Sharing (publishing) notes to public internet
  • Strong note encryption with per-note granularity
  • Relation maps and link maps for visualizing notes and their relations
  • Scales well in both usability and performance upwards of 100 000 notes
  • Evernote and Markdown import & export
  • Web Clipper for easy saving of web content



  1. Windows
  2. Linux: Debian, Ubuntu, Linux Mint, Arch Linux, Fedora, MX Linux, Solus Linux
  3. macOS