Zephyr Basecamp is a functioning GTK frontend and PostgreSQL backend enterprise project that gives small and midsize businesses the same level of inventory, order entry, sales tracking, and accounting functionality as would be expected from commercial applications. It has interfaces for both X11/GNOME/Linux and Windows.
LinXtris is a simple Tetris clone. Although the name is inspired on Linux, the game is designed to run on any platform that supports the Gnat Ada compiler, the Gtk+ toolkit and the GtkAda binding. This game should compile easily on any *nix and Windows system since GtkAda using Gnat does not require a makefile for each specific platform.
GPS is a free software multi-platform and multi-language integrated development environment (IDE). It provides a wide range of tools integrated together, and features particularly powerful source navigation capabilities. GPS also integrates GVD, the GNU Visual Debugger, and replaces it.
WIPORT is a layer over the grx graphics library which provides a simple GUI API with memorization of the objects displayed in the various windows. This makes redrawing and printing to a scalable PostScript representation easy to do. Thanks to the grx library programs, using WIPORT works identically on the DOS graphical console, Linux+svgalib, and Linux+X11. WIPORT is written in C and comes with an Ada-95 binding.