T-Clock Redux - T-Clock Redux in an enhanced fork of Stoic Joker's T-Clock 2010 with ISO week number support...
Free Desktop Clock - Free Desktop Clock is the advanced replacement for standard Windows tray clock.
DS Clock - Keep your time synchronized with Atomic Time servers, using customizable digital desktop clock with westminster chimes.
AlarmDJ - Online Alarm Clock - Use YouTube videos or MP3 files as alarm sound. Works offline.
FuzzyClock - Often you don't need the exact time in hours, minutes and seconds.
LClock - Longhorn systray clock program