ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.
Day Counter App - Customizable counting app to track your deadlines, steaks, helps you countdown and remember special moments that matter to you and many more. Works in 2 different modes: count up and countdown.
LClock - Longhorn systray clock program
Days.To - Count down to holidays and events & share with friends.
DS Clock - Keep your time synchronized with Atomic Time servers, using customizable digital desktop clock with westminster chimes.
Cloxee: Countdown App & Widget - Cloxee is a free countdown app that allows to design your own countdowns, share them on social media and have them as the widget on your device.