Easy Timer is a fast and easy to use Timer Application for Windows Phone 7.
It adapts to the device theme and has the beautiful Metro Style UI. You have Countdown- and Stopwatch-Timer, both can be used simultaneously
Free Timer - All-purpose timer with great analog and digital display. It runs when phone is in lock mode - this feature can be enabled/disabled in settings. Allows you to remember the previous set time.
Simple and very effective
CD&UV Timer - A simple app but useful app for calculating the time your CD or UV measurement will take. After entering the range of the measurement, scan speed and number of the accumulations/cycles you are presented with measurement time in minutes as well as with the projected end time
Timeout! - Parents, do you need to give a timeout while you are out and about? Let Timeout help you be consistent with your discipline in or out of the house.
Simply add your kids with their name, birthday, and an optional picture. Once added, touch your kids to bring up options to edit their details or start a timeout (the time it calculated from their birthday)
Hangtime Stopwatch - Two stopwatches in one application. Standard functioning stopwatch with start, stop, and lap feature. Also a 2nd stopwatch that has start and save. Good for measuring multiple instances of a similar activity - like measuring hangtime of punts or kickoffs
ClockWork - This handy tool is great for tracking time in all sorts of ways. Use the Timer to keep track of how much time is left a sporting events or when it's time to take the pizza out of the oven. Use the world clock to avoid calling your friend on the other side of the world in the middle of the night
Free Countdown Timer - Simple countdown timer with cool sand timer effect for keeping track of things like cooking, watering, cleaning your teeth, etc. It will run while the phone is asleep and you can also disable the screensaver. Supports preset times of 5, 10, 15, 30 minutes and your last time for quickly setting the countdown time