This tool lets you simulate keyboard input and mouse activity, move and resize windows, etc. It does this using X11's XTEST extension and other Xlib functions.

Stumpwm is a tiling, keyboard driven X11 Window Manager written entirely in Common Lisp.

Nice icons and wallpapers for the discerning individual, collected and curated.

Veusz is a scientific plotting and graphing package written in Python. It uses PyQt (Wiki) and Numpy. Veusz is designed to produce publication-ready Postscript/PDF output. Veusz runs under Unix/Linux, Windows and Mac OS X.

Warum aktuelle Grafische Benutzeroberflächen nicht der Benutzerfreundlichkeit letzter Schluss sind