I couldn't find free timer that will stay above presentation so I made one. CountDownClock can count up and down an time interval or show system clock.
Some of features are:
- transparent timer (Windows, Linux KDE, Gnome...)
- font and colors can be changed
- configuration can be saved and loaded
- close on time up
- some command line parameters
- beep on time up (only Windows)
Be the first to post a review of cdclock!