Project collaboration, management, and task software: Basecamp

Project collaboration, management, and task software: Basecamp: "What is Basecamp?

Basecamp is a unique project collaboration tool. Projects don't fail from a lack of charts, graphs, or reports, they fail from a lack of communication and collaboration. Basecamp makes it simple to communicate and collaborate on projects.

It's elegant, easy, and web-based. You don't need to download, install, or configure anything (no IT department required!). All you need is a web browser and an internet connection. And don't worry, your data is safe with us.
How can Basecamp help us?

Basecamp makes it easy to centralize group communication with co-workers and clients.

Assign to-dos and tasks
Post messages and gather feedback
Simple scheduling and permissions
Share files internally or with clients
Track people's time"