Trello is a project management tool, a powerful competitor to more popular Basecamp service.
Allows to create projects, add members (they must have a Trello account too) as co-workers or clients, create to do lists, assign different colors, due date.
The interface is really simple, is great to create and edit very quickly the content. Is easy to have the big picture of entire project, add colors and icons (stickers) to visualize and filter your data very fast.
