VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts. Such maps can help you to improve your creativity and effectivity. You can use them for time management, to organize tasks, to get an overview over complex contexts
Wibom is the Wine bottle manager. The Core is written in Bash. Wibom-gtk, the GTK+ 2 frontend, is written in Ruby. More on wibom.sourceforge.net.