Tyme - Timers Manager - TM-Manager Windows application for monitoring and updating TimeMachines clock products.

Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.

Alarm Clock Xtreme - Alarm Clock Xtreme: Alarm, Stopwatch, Timer (Free) is the most popular alarm clock app created and published by AVG Labs for both iOS and Android devices.

Sleep as Android - Common alarm clocks ignore your sleep cycles, they wake you on schedule no matter your are currently in your deep sleep. Waking up from deep sleep is unpleasant, it makes you tired and it may negatively affect your productivity during the whole day.

iSleep - iSleep features a sleep timer coupled with an optional Alarm Clock for iTunes and DVD Player.

Talalarmo - Minimalistic android alarm