An IDE that allows integration of Vim/Emacs as editor.
AbiWord is a free word processing program similar to Microsoft Word. It is suitable for a wide variety of word processing tasks.
Editra is a multi-platform text editor with an implementation that focuses on creating an easy to use interface and features that aid in code development.
A toolsmith for GNOME-based applications.
The KDE Advanced Text Editor (Kate).
Komodo Edit is a free text editor for dynamic programming languages.
A true cross-platform, multi-language code editor, with support for over 60 languages on 9 platforms.