1. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

  2. Rider is a cross-platform .NET IDE based on the IntelliJ platform and ReSharper.

  3. A Native Python IDE for Data Science

  4. TextPad is a powerful, general purpose editor for plain text files that is easy to use, with all the features a power user requires.

  5. BBEdit is a professional HTML and text editor for Macintosh that provides features for editing, searching, and minipulation of text for web authors and software developers.

  6. Online Interpreters in JavaScript. Online coding and REPL. Run and share code.

  7. openSUSE is a free and Linux-based operating system for your PC, Laptop or Server.

  8. Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.

  9. Eclipse IDE for Java EE developers.

  10. Cross-platform IDE for productive Ruby & Rails development.

  11. Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.

  12. Glade is a RAD tool to enable quick & easy development of user interfaces for the GTK+ toolkit...