Open Workbench is an open source desktop application that provides robust project scheduling and management functionality. Already the scheduling standard for more than 100,000 project managers worldwide, Open Workbench is a free and powerful alternative to Microsoft Project.
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.
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.
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.
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.
6: Project HQ
Project HQ is a collaborative open source project management tool, similar to Basecamp and activeCollab. Project HQ is built on open source technologies like Python, Pylons and SQLAlchemy and is fully database independent. Project HQ uses a structured workflow to assist you in managing your projects.
Collabtive is a web-based project management software that is being published as Open Source software. The project was started in November 2007. It strives to provide an Open Source alternative to proprietary tools like Basecamp or ActiveCollab.
eGroupWare is a free open source groupware software intended for businesses from small to enterprises. Its primary functions allow users to manage contacts, appointments, projects and to-do lists.
It is used either via its native web-interface, making access platform-independent, or by using different supported groupware clients, such as Kontact, Novell Evolution, or Microsoft Outlook. It can also be used by mobile phone or PDA via SyncML.
KForge is an open-source (GPL) system for managing software and knowledge projects. It re-uses existing best-of-breed tools such as a versioned storage (subversion), a tracker (trac), and wiki (trac or moinmoin), integrating them with the system’s own facilities (projects, users, permissions etc). KForge also provides a complete web interface for project administration as well a fully-developed plugin system so that new services and features can be easily added.
It is a complete online solution focused on improving productivity, collaboration, communication and management of your teams. OpenGoo main features include document management, contact management, e-mail, project management, and time management. Text documents and presentations can be created and edited online. Files can be uploaded, organized and shared, independent of file formats.
ClockingIT is a free Project Management solution, which helps your team stay focused and on top of things.