Gnome Clocks - Clock application designed for GNOME 3
Talalarmo - Minimalistic android alarm
T-Clock Redux - T-Clock Redux in an enhanced fork of Stoic Joker's T-Clock 2010 with ISO week number support...
Date Reminder - Date Reminder reminds you of recurring or nonrecurring events, like birthdays, bills to pay...
Insane Alarm - Wakes you up no matter what! Features - obscenely loud blaring emergency alarm sound.
Fitari Fitness Alarm Clock - The Fitness Alarm Clock will wake you up by making you stand up and do a number of fitness...