OpenProj - Free Project Management Software

There haven't been really good options available for project managers looking for inexpensive alternatives for Microsoft Project.

OpenProj promises to change that. OpenProj is not only inexpensive, but it is free, and it is open source. It runs on Linux, Microsoft Windows, and Mac operating systems. It provides a complete replacement of Microsoft Project and can open Microsoft Project files.

OpenProj uses an advanced scheduling engine, provides Gantt charts, network diagrams, WBS charts, RBS charts, and more. Translations exist for Spanish, German, French, Chinese, Russian, Portugese, and Swedish.

Download files are available here. Ubuntu users download the debian package (.deb) and follow the instructions for quick and easy installation.