OpenProj
OpenProj is a free and powerful open source desktop alternative to Microsoft Project. Serena released OpenProj in 2008 as an open source code project. OpenProj is no longer supported by Serena. Please visit the SourceForge website to find out more.

OpenProj provides project managers the rich functionality they expect, including Gantt charts, WBS and more - minus the costs of commercial desktop tools.
Rich functionality
OpenProj offers the rich functionality project managers need to run their projects – including Gantt and PERT charts, WBS (work breakdown structure) and RBS (resource breakdown structure) charts, Earned Value costing, and more. Because OpenProj is very similar to Microsoft Project, there is literally no time or effort involved in switching to OpenProj.
Multiple formats: OpenProj enables project managers to easily work with Microsoft Project and Oracle Primavera files. OpenProj users can eliminate any migration headaches with switching, and can continue working with other project managers using Microsoft and Oracle products.
Global usage: OpenProj can run on virtually any computer – including Windows, Mac, UNIX, and Linux. It has also been translated into French, Spanish, German, Portuguese, Swedish, Finnish, Galician, Persian, Russian, Korean, and Chinese.
Project and Portfolio Management (PPM)
For more comprehensive project and portfolio management (PPM) functionality, many organizations turn to Serena Project and Portfolio Management. Serena PPM helps everyone collaborate on incoming requests, prioritize requests against current project pipeline and priorities, and staff the best projects as quickly as possible.
Agile Project Management
Organizations that need to manage agile projects instead of traditional waterfall projects rely on Serena Agile Planner. Serena Agile Planner offers organizations an easy and flexible way to run their agile development projects. In addition to providing burndown charts, task boards, and sprint backlogs, Serena Agile Planner also helps software developers more easily make the move to agile.