AlarmDroid - AlarmDroid is an alarm application that is only available on Android devices and possesses many interesting features.
Clock + - Alarm clock, timer, and stopwatch application for Android
Google Clock - Google Clock is an application of Google Inc.
Clock Tab - Clock tab allows you to view the time right in your web browser!
Talalarmo - Minimalistic android alarm
Sveglia - A free alarm clock that can sound an alarm, execute a program, or shut the system down.