- [Eclipse](https://www.eclipse.org/) - IDE written in Java with an extensible plug-in system. ([Source Code](https://git.eclipse.org/c/)) `EPL-1.0``Java`
- [Geany](https://www.geany.org/) - GTK2 text editor. ([Source Code](https://github.com/geany/geany)) `GPL-2.0``C/C++`
- [GNU Emacs](https://www.gnu.org/software/emacs/) - An extensible, customizable text editor-and more. ([Source Code](https://github.com/emacs-mirror/emacs)) `GPL-3.0``C`
- [Haroopad](http://pad.haroopress.com/) - Markdown editor with live preview. ([Source Code](https://github.com/rhiokim/haroopad)) `GLP-3.0``JavaScript`
- [Haroopad](http://pad.haroopress.com/) - Markdown editor with live preview. ([Source Code](https://github.com/rhiokim/haroopad)) `GPL-3.0``JavaScript`
- [ICEcoder](https://icecoder.net/) - Code editor awesomeness, built with common web languages. ([Demo](http://demo.icecoder.net), [Source Code](https://github.com/icecoder/ICEcoder)) `MIT``PHP`