SleepBot - SleepBot is a sleep tracking app available in Google Play and the Apple App Store.
Clock Tab - Clock tab allows you to view the time right in your web browser!
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.
Free Vector Clocks - Free Vector Graphics Desktop Alarm Clocks.
Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.
Sveglia - A free alarm clock that can sound an alarm, execute a program, or shut the system down.