Repetitive Strain Injury prevention tool

 Workrave is a program that assists in the recovery and prevention of
 Repetitive Strain Injury (RSI). The program frequently alerts you to
 take micro-pauses, rest breaks and restricts you to your daily limit.
 .
 It includes a system tray applet that works with GNOME and KDE
 and has network capabilities to monitor your activity even if
 switching back and forth between different computers is part of your
 job.
 .
 Workrave offers many more configuration options than other similar
 tools.