Zettlr is a free open-source Markdown editor for professional writers, developers, researchers, journalists, bloggers and content creators.

It allows you to write your files in a Markdown format and make a use of the YAML header metadata that is widely used by many ope-source blogging platforms.

With Zettlr you can open a folder that contains several Markdown files, open many of them using the handy tabbed interface, browse your files content easily, and connect your file knowledge.

Researchers would love Zettler, as it comes with citiations support, Zotero integration, full Zettelkasten support, multi-languages support, word counter, writing statistics and more.

Another reason why we love Zettler, is its ability to handle large Markdown files, and its fast built-in full-text search.

Features

Available in over a dozen languages
Supports light and dark theme
Tight and ever-growing integration with your favourite reference manager (such as Zotero or JabRef)
Supports file head YAML format
Built-in theme support
Clutter-free editor
Comes with a dozen of handy shortcuts that boosts your productivity
Supports tags
Built-in file browser
In-file content browser
Minimal WYSIWYG editor
Comes with a tabbed interface that supports many documents
Cite with Zettlr using citeproc and your existing literature database
Five themes and dark mode support
File-agnostic writing: Enjoy full control over your own files
Keep all your notes and texts in one place — searchable and accessible
Code highlighting for many languages
Simple and beautiful exports with Pandoc, LaTeX, and Textbundle
Support for state-of-the-art knowledge management techniques (Zettelkasten)
A revolutionary search algorithm with integrated heatmap