TaskJuggler is a modern and powerful, Free and Open Source Software project
management tool. Its new approach to project planing and tracking is more
flexible and superior to the commonly used Gantt chart editing tools.
TaskJuggler is project management software for serious project managers. It
covers the complete spectrum of project management tasks from the first idea
to the completion of the project. It assists you during project scoping,
resource assignment, cost and revenue planing, risk and communication
management.