GUI Libraries
- GTK+ (The GIMP Toolkit. A portable C based GUI toolkit. License: LGPL) (ml)
- GtkGLExt (C and C++ library interface to use Op*nGL operations via GTK+ widgets. License: LGPL) (cvs) (ml)
- GNOME ("GNU Object Model Environment". GUI application framework based on GTK+)
- Xfce (GUI application framework based on GTK+) (cvs) (ml) (forum) (blog)
- PIXEL (GUI toolkit build on Microwindows and Nano-X. PIXEL is aimed at embedded desktop systems and comes with a set of desktop applications. License: GPL) (ml)
- MiniGUI (Lightweight GUI toolkit. License: LGPL) (source)
- PicoGUI (Lightweight GUI toolkit. License: LGPL) (cvs) (ml)
- MicroWindows (Lightweight GUI toolkit. License: MPL) (ml)
- Lesstif (Sourcecode compatible library for creating GUI applications which use OSF/Mot*f. License: LGPL) (cvs) (ml)