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Trilium Notes is a hierarchical note taking application with focus on building large personal knowledge bases. See screenshots for quick overview:

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• Notes can be arranged into arbitrarily deep tree. Single note can be placed into multiple places in the tree (see cloning)
• Rich WYSIWYG note editing including e.g. tables, images and math with markdown autoformat
• Support for editing notes with source code, including syntax highlighting
• 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
  • there's a 3rd party service for hosting synchronisation server
• Sharing (publishing) notes to public internet
• Strong note encryption with per-note granularity
• Sketching diagrams with built-in Excalidraw (note type "canvas")
• Relation maps and link maps for visualizing notes and their relations
• Scripting - see Advanced showcases
• REST API for automation
• Scales well in both usability and performance upwards of 100 000 notes
• Touch optimized mobile frontend for smartphones and tablets
• Night theme
• Evernote and Markdown import & export
• Web Clipper for easy saving of web content

Check out awesome-trilium for 3rd party themes, scripts, plugins and more.

Trilium is provided as either desktop application (Linux and Windows) or web application hosted on your server (Linux). Mac OS desktop build is available, but it is unsupported.

• If you want to use Trilium on the desktop, download binary release for your platform from latest release, unzip the package and run trilium executable.
• If you want to install Trilium on server, follow this page.
  • Currently only recent Chrome and Firefox are supported (tested) browsers.

Trilium is also provided as a Flatpak:

See wiki for complete list of documentation pages.

You can also read Patterns of personal knowledge base to get some inspiration on how you might use Trilium.

Use a browser based dev environment

Or clone locally and run

npm install
npm run start-server

• CKEditor 5 - best WYSIWYG editor on the market, very interactive and listening team
• FancyTree - very feature rich tree library without real competition. Trilium Notes would not be the same without it.
• CodeMirror - code editor with support for huge amount of languages
• jsPlumb - visual connectivity library without competition. Used in relation maps and link maps

You can support Trilium using GitHub Sponsors, PayPal or Bitcoin (bitcoin:bc1qv3svjn40v89mnkre5vyvs2xw6y8phaltl385d2).

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.