[randsp]

Sorry for advertisement, I'm the cofounder of Planplex and maybe you could find it useful for your needs: http://www.planplex.com

Main features are:

- <canvas> based and optimized for Chrome, it means Planplex supports thousands of tasks

- Collaborative with realtime chat

- Links support to integrate with other tools like Git, Jira, Redmine...

- Activity records to estimate the real progress of your tasks. Assign tasks to people, press "play" on your assigned tasks and Planplex will estimate your progress.

- Calendars

- Share your projects with clients or coworkers.

Check this out: https://www.planplex.com/frontend#public/juan/Public