Talalarmo - Minimalistic android alarm
Gentle Alarm - Gentle Alarm can consider your sleepcycles to wake you up when you are in light sleep.
Digital Clock 4 - Beautiful customizable clock with plugins
Insane Alarm - Wakes you up no matter what! Features - obscenely loud blaring emergency alarm sound.
Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.
Online Alarm Clock - The world's original online alarm clock, established in 2006.