Open Source Project Trac

Trac is an open source, web-based project management and bug-tracking tool. Trac allows hyperlinking information between a computer bug database, revision control and wiki content. It also serves as a web interface to a version control system like Subversion, Git, Mercurial, Bazaar and Darcs.

Open Source Project ProjectPier

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.

Open Source Project Redmine

Redmine is a flexible project management web application. Written using Ruby on Rails framework, it is cross-platform and cross-database. It includes calendar and gantt charts to aid visual representation of projects and their deadlines.

Open Source Project Codendi

Codendi is an open-source collaborative development platform offered by Xerox. From only one interface, it gathers, all the needed tools for software development teams: management and versioning of code, bugs, requirements, documents, reporting, tests etc. It is mainly used for managing software project processes.