The Internet Arcade - 900+ classic arcade games, no quarters required.
Gestimer - For those little reminders during the day
Revi Box - Receive a box every 3 months to support refugee schools
Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
GameTree - Discover the friends and games you will love most.
XNote Stopwatch - Try the most feature-rich stopwatch and timer software on the net for free!