Trello is a great tool to replace your team’s use of email and chat for task-based communication. You can learn all you need to get a job done.
Trello lets you work more collaboratively and get more done. Trello’s boards, lists, and cards enable you to organize and prioritize your projects in a fun, flexible, and rewarding way.
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.
Signup for free at https://trello.com/
Here’s a quick over about Tello:
Here’s a 13-minute tutorial by Jessica Stansberry on How to Use Trello to Organize Your Business Like a Pro: