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Mantis Bug Tracker is a free and open source web-based bug tracking system released under the terms of the GNU General Public License version 2. The most common use of MantisBT is to track software defects. However, MantisBT is often configured by users to serve as a more generic issue tracking system and project management tool.
Completely customizable, CakePHP based project management system for firms, their teams and their clients. A project management system that will suit your needs because it is module based, so it can grow and shrink with your requirements. Version 0.4 beta was released March 23, 2009.
Standing on the shoulders of Trac, Apache Bloodhound is hosted by the Apache Software Foundation's Incubator project. Currently, it has three key aims: Multiple Projects Bloodhound will manage anything from one to dozens of commercial or open source projects, and scale seamlessly in-between. ... [More]
The open source ticket/issue tracker that can track anything - completely flexible fields, categories, status and status transitions! Modules for collecting PHP errors and more included.
Storm is a set of contributed modules for the Drupal CMS. It offers project management solutions including ticketing, time tracking and invoicing.