Digital Clock 4 - Beautiful customizable clock with plugins
Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
Memo to Me - Online email & SMS reminder service.
SnapTimer - SnapTimer is a simple, free, portable countdown timer for Windows.
Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.
wnr - Better than pomodoro, this timer app balances work and rest.