Timer and Stopwatch - Online Stopwatch, with start alerts, lap times and sounds. Save details of your timings in a text file.
TimeLeft - TimeLeft is a versatile desktop utility - it can be used as a countdown clock, reminder, clock...
Smart Sloth - Smart Sloth uses the concept of timeboxing, which is to allocate a set amount of time to each task, therefore, creating a deadline which can increase the productivity of the user.
Daysfrom.Today - Easily calculate the number of days, weeks, months, and years from today with our simple online calculator. Quickly find out how much time has passed or how much time is left with a few clicks. Try it now!
ChirpyTime - ChirpyTime: Timer / Alarm Clock / Clock app for iPhone / iPod Touch
Hourglass - Hourglass is the most advanced simple countdown timer for Windows.