The Official FVWM Homepage - The standard window manager for Linux, stable but not as pretty as Window Maker or Enlightenment. InputGUIDO - A GUI being developed for older DOS systems that are incapable of running Windows. Java Gui Builder - An engine that reads XML files describing graphical user interfaces layout. FOX GUI Toolkit - An open source cross-platform C++ based Toolkit for GUI development. KronoJunior - Open source GUI for less powerful or old computers. Prima - Toolkit for multi-platform GUI development. (Perl) [OS Independent] GUIS - Open source widget server. (Python, Ruby, GTK2) [OS Independent] The Visual Component Framework - C++ framework created to provide platform GUI framework, features such as Java and Java's Swing, and Borland's Visual Component Library.