Virtual Planner is a Web-based project management application which sits on top of multiple Trac projects, providing a unified view of them all. It allows for weekly assignment of work, estimated versus actual job times, a drag and drop Web-based UI, and direct linking to your Trac projects.
ScrumDo is a Web application to manage your agile Scrum based projects. It gives you the tools to create and track user stories in your project. Some features include automatic burn-up charts, drag and drop iteration planning, the ability to export to Excel, edit your stories, and import your changes back in, a history tool to track where you've been, and a predictions tool for looking ahead. Multiple scrum teams are supported off a single backlog.