Agilefant provides a free and SaaS version of their project management platform. It majors on agile development and supports sprints, projects, portfolios and multi-team development.
iceScrum is a web application for using Scrum while keeping the spirit of a collaborative workspace. It also offers virtual boards with post-its for sprint backlog, product backlog and others.
LibrePlan supports a broad range of functionality including Gantt charts, financial reports, resource allocation and all the tools a large project might need. It is a web application with a good interface, and is well supported.
MyCollab-Project is part of a broader product set which includes CRM and Document Management. It is completely built in Java and is available in three editions, one of which is the free option. It supports time tracking, Gantt charts, milestones, risk and problem management and many other features.
Odoo forms part of a broader suite of business applications and runs on multiple platforms. A Kanban view is supported along with Gantt charts and control deadlines. Collaboration features strongly and the tool is highly configurable.
OrangeScrum is a web based tool and is suitable for small and medium size businesses. It supports a host of features with resource planning, collaboration features, Kanban support and most others associated with project management. The community version can be downloaded for free and installed locally, or for a modest fee it can be used as cloud service.
Project Libre is one of the most widely used open source project management tools and is often seen as an alternative to Microsoft Project. There are ambitious plans for the future including a SaaS version and Enterprise Project and PPM. It is used by many of the world’s largest corporations.
ProjectOpen is a large product with dozens of open source components. It is targeted at large organisations with possibly hundreds of users, and the mixed source model means there is a free open source version, and a commercial enhanced offering.
Redmine is a popular project management tool that runs on Ruby and Rails. It is web based and comes with some novel features such as a wiki, repository and issue tracker.
Taiga distinguishes itself with a very attractive user interface, and majors on agile development. As such it supports Kanban, sprints and issues. It features a number of novel items such as Kudos Badges, negotiation, easy migration from other platforms and video conferencing. A paid version is also offered.
Tuleap addresses both project management and software development, and can accommodate agile, V-model and custom processes. Businesses developing open source products will welcome the integration with SVN, Git and Jenkins. This free product does not throttle usage in any way.