
Description: Zettlr is a markdown editor for students, academics and novelists. It features a distraction-free writing mode, auto-save, syntax highlighting for various markup languages, and support for citations and bibliographies.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: NoteKit is a free and open-source note taking app for Linux. It has a simple interface for creating, editing, organizing and searching notes. Key features include tagging, notebooks, markdown support and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API