Asana is the easiest way for teams to track their work. From tasks and projects to conversations and dashboards, Asana enables teams to move work from start to finish--and get results. Asana is web based software-as-a-service designed to improve team collaboration. It focuses on allowing users to manage projects and tasks online without the use of email.
Each team can create a workspace. Workspaces contain projects, and projects contain tasks. In each task, users can add notes, comments, attachments, and tags. Users can follow projects and tasks and, when the state of a project or task changes, followers get updates about the changes in their inboxes. Asana is free for teams up to 15 members with unlimited projects and tasks.