freedesktop.org clock

 fdclock is a clock to show off many of Cairo's features: it features scalable
 widgets (including a scalable freedesktop.org logo as the background), and
 transparency. When used with an X server that supports the Composite
 extension, you will be able to see proper transparency for the clock, and
 note how the hands/dots/etc cast darker individual shadows than the rest.
 .
 This package comes from the freedesktop.org git module:
 git://anongit.freedesktop.org/git/xorg/app/fdclock
 The module name is fdclock.