ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
LClock - Longhorn systray clock program
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
DS Clock - Keep your time synchronized with Atomic Time servers, using customizable digital desktop clock with westminster chimes.
TimeCamp - Simple and robust time tracking app to help you stay on the same page with your team while working from home.