Trello is a web based project management solution. Developed by Trello, Inc.
License: Freemium
Apps available for Online Android iPhone Windows RT Android Tablet
Asana is a web and mobile application designed to help teams track their work.
Apps available for Online Android iPhone
Asana offers a more robust set of project management features suitable for complex projects, while Trello provides a simpler, more visual approach that is great for smaller teams and basic task tracking.