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Bluefish is a powerful editor using GTK for experienced web designers and programmers. Bluefish supports many programming and markup languages, but it focuses on editing dynamic and interactive websites. It features a multiple file editor, multiple toolbars, custom menus, image and thumbnail dialogs, open from the Web, CSS dialogs, PHP, HTML, Java, C, and XML support, external program integration (tidy, weblint, make, javac), and lots of wizards.

Gobby is a free collaborative editor based on libobby, a library which provides synced document buffers. It supports multiple documents in one session and a multi-user chat. It runs on Microsoft Windows, Mac OS X, Linux and other Unix-like platforms.

Katoob is a light weight, multi lingual, BIDI-aware text editor based on the Gtk+ 2 library. It supports opening and saving files in multiple encodings. The main support was for Arabic language but more languages are currently supported. It should run on most BSD and POSIX compliant operating systems.

Minimum Profit (mp) is a programmer's text editor. It features small memory and disk requirements, syntax highlighting, context-sensitive help for the source code being edited, multiple simultaneous file editing, ctags support, word wrapping, and more. It can be compiled for Linux / Unix (console), GTK, and MS Windows.

SciTE is a GUI-based single-document editor which uses the Scintilla editor component. It rapidly styles most common programming languages with good control over how syntactic elements are displayed, and features folding for C++, C, Java, JavaScript, and Python. Styling of HTML also styles embedded scripts written in VBScript, Javascript, or Python.

Zoinks is a programmer's editor and development environment for Unix/X11 systems. The editor has features similar to Mac text editors like MPW and CodeWarrior. It also has some features for HTML authoring. Zoinks supports comparing/diffing files and directory hierarchies. It also supports inputting and editing multi-byte text (e.g. Japanese and other Asian languages).