Thyme - The task timer for OS X.
The Internet Arcade - 900+ classic arcade games, no quarters required.
XNote Stopwatch - Try the most feature-rich stopwatch and timer software on the net for free!
Revi Box - Receive a box every 3 months to support refugee schools
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
GameTree - Discover the friends and games you will love most.