SoftAlarm Control Center

SoftAlarm is an application that allows you to use your computer as an alarm clock. You simply load the SoftAlarm Control Center, create whatever alarms you want, then let the Control Center run and when the time comes, the alarm goes off. There are four types of alarms that you can employ. You have a simple message box, which will just pop up a box with the content you requested. You can have the alarm beep, and configure your own frequency and duration for the beeps. You can give the alarm some music to play, or, using text to speech, you can even make your alarm talk to you.

Limitations:

30-day trial/ 60-second limitation on snooze/Nag screen