A number of companies use 37 Signals‘ Basecamp, a hosted project management, collaboration and tracking application online. It features a rich interface and many layers of administration and accountability.
Branching from an early open-source version of Basecamp, activeCollab is an alternative that can be installed and managed on a company’s own servers or local network, but has become a licensed product since it left beta.
From the developer site:
ProjectPier is a Free, Open-Source, self-hosted PHP application for managing tasks, projects and teams through an intuitive web interface. ProjectPier will help your organization communicate, collaborate and get things done Its function is similar to commercial groupware/project management products, but allows the freedom and scalability of self-hosting. Even better, it will always be free.
It was easy and intuitive to set up new clients and assign them to projects, and create milestones and to-do items for everyone. Other key features that I found useful include:
- sharing and tagging of important files
- communication and notification settings, including e-mail and RSS
- custom theming and form creation
If you can live without many of the Ajax-y bells and whistles that Basecamp touts, as well as the real-time whiteboard and team time-tracking, ProjectPier is a solid application for collaboration. Download the source code and try it out!