Trello is a web-based project management application with a beautiful card-based UI.
Zenkit is a tool you can use to organize anything: Collaborate with your team, track projects, build databases, or simply manage your personal to-do lists. Zenkit is flexible enough to fit any workflow, and powerful enough to run your business on.
Atina is a project management tool which can be customized according to your teams needs. It eliminates every teams task management problem with its process sharing & tracking, deadline, and comment features.