Here comes an online alarm clock, Kukuklok. The name says it all. It is an online alarm clock which you can use to wake you up.

Online Alarm Clock With 5 Alarm Tones

All you have to do to use Kukuklok is to set the alarm time and the alarm tone you want to use. And the alarm tone will start ringing at the right time. It is having the 5 nice alarm tones, including Slayer Guitar \m/

You can use it as the reminder also while working on the computer.

Kukuklok : Online Alarm Clock