Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.
Gnome Clocks - Clock application designed for GNOME 3
My Own Clock - Wooden gear clocks, clock kits, and do-it-yourself clock plans. These original all-wood clocks are functional, attractive, and fun!
AlarmDJ - Online Alarm Clock - Use YouTube videos or MP3 files as alarm sound. Works offline.
Talalarmo - Minimalistic android alarm
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.