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.
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.
yuuflow - Simple yet flexible project management
Basecamp - A simple and elegant project management system.
SpiraTeam - Learn about powerful ALM software and team collaboration tools from Inflectra. SpiraTeam pairs the features of SpiraTest and SpiraPlan. Learn more!
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.