The Desktop Notifications framework provides a standard way of doing passive pop-up notifications on the Linux desktop. These are designed to notify the user of something without interrupting their work with a dialog box that they must close. Passive popups can automatically disappear after a short period of time.

This is "Ding" * a dictionary lookup program for Unix, * DIctionary Nice Grep, * a Tk based Front-End to [ae]grep, (hun|a|i)spell, dict, ... * Ding {n} :: thing

Minimal MIDI player implementation based on the wildmidi library that can either dump to WAV or playback over ALSA. It is intended to demonstrate the features of libWildMidi, including: reberb, logarithmic volume and high-quality linear or gauss resampling.

Yad allows you to display GTK+ dialog boxes from command line or shell scripts. It is similar to Zenity but with more dialog types and options.