Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.
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.
TopTracker - Beautiful, free time tracking
Wrike - Wrike is a flexible, scalable, and easy-to-use collaborative work management software that helps high-performance teams organize and accomplish their work. Try it now.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
Basecamp - A simple and elegant project management system.