Jottr is a text and Markdown editor designed primarily for writers, journalists and researchers rather than software development. It presents a restrained writing environment while providing tools intended to reduce switching between the editor and supporting material.
The application can work with ordinary plain text or Markdown. A distraction-reducing focus mode gives the document more prominence, while snippets and completion facilities help with text that is entered repeatedly.
Jottr also has an extensible architecture. Its plugin system can add commands, interface elements and background functionality, allowing the basic writing environment to be adapted without forcing every feature into the core application.
This is free and open source software.
Key Features
- Plain-text and Markdown editing.
- Side-by-side Markdown preview.
- Focus mode for distraction-reduced writing.
- Reusable text snippets.
- Tab-triggered completion facilities.
- Integrated browser for consulting online material while writing.
- Site-specific search facilities.
- Colour themes including a sepia-style writing theme.
- Plugin system for extending the application.
- Plugins can register additional commands.
- Extensions can add toolbar actions and sidebar items.
- Plugins can provide custom panels and editor extensions.
- Background services can be implemented through the extension system.
- Designed around research and prose workflows rather than project-oriented software development.
Website: github.com/mfat/jottr
Support:
Developer: Mehdi
License: GNU General Public License v3.0

Jottr is written in Python. Learn Python with our recommended free books and free tutorials.
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I like its focus mode. Useful for me.