Stopwatch - A Java countdown timer and stopwatch. Features a fullscreen and a resizable window mode.
ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.
XNote Stopwatch - Try the most feature-rich stopwatch and timer software on the net for free!
T-Clock Redux - T-Clock Redux in an enhanced fork of Stoic Joker's T-Clock 2010 with ISO week number support...
FocusMe - With so much access to information and distractions on the internet, it's easy to get sidetracked.
AlarmDJ - Online Alarm Clock - Use YouTube videos or MP3 files as alarm sound. Works offline.