Trilium Notes

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

Features:

Rich WYSIWYG note editing including e.g. tables, images and math with markdown autoformat

Support for editing notes with source code, including syntax highlighting

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

REST API for automation