Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Free Countdown Timer - Free Countdown Timer is a free, full-featured and user-friendly countdown timer for Windows
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
NetTime - nettime is a time & attendance software solution.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.