Editra is a cross-platform, open-source text editor, released under a wxWindows license.
License: Open Source
Apps available for Mac OS X Windows Linux
KDE Advanced Text Editor (KATE) is a free and opensource text editor. Developed by Christoph Cullmann
Apps available for Windows Linux BSD KDE
Kate is a powerful editing tool with a focus on collaboration and advanced features, while Editra is lightweight and customizable, catering to users who prioritize speed and flexibility.