Text editing

Typora is a cross-platform minimal markdown editor, providing seamless experience for both markdown readers and writers.

Org: an Emacs Mode for Notes, Planning, Authoring and more!

Obsidian – A knowledge base that works on local Markdown files.

Lazarus is a professional open-source cross platform IDE powered by Free Pascal

#develop (short for SharpDevelop) is a free IDE for .NET programming languages. - icsharpcode/SharpDevelop

Apache NetBeans

Best way to write and share your knowledge in markdown.

Available on Mac, Windows and Linux

Code faster with Komodo IDE from ActiveState. Best multi-language IDE for today's web languages - Python, PHP, Perl, Golang, Ruby and more.

Light Table is the next generation code editor. Light Table Connects you to your creation with instant feedback and showing data values flow through your code.

A LaTeX editor

TinyMCE is the most advanced WYSIWYG HTML editor designed to simplify website content creation. The rich text editing platform that helped launched Atlassian, Medium, Evernote and more.

Rock-solid, Free WYSIWYG Editor with Collaborative Editing, 200+ features, Full Documentation and Support. Trusted by 20k+ companies.

BlueGriffon, the next-gen Wysiwyg Web Editor

Brackets is a lightweight, yet powerful, modern text editor. We blend visual tools into the editor so you get the right amount of help when you want it. With new features and extensions released every 3-4 weeks, it's like getting presents all year long.

Online LaTeX equation editor, generate your mathematical expressions using LaTeX with a simple way.

Website for Spyder, the Scientific Python Development Environment

PyDev Manual

Visual Studio Code is a code editor redefined and optimized for building and debugging modern web and cloud applications.  Visual Studio Code is free and available on your favorite platform - Linux, macOS, and Windows.