OpenProj is a free, open source desktop alternative to Microsoft Project. OpenProj has been downloaded over 800,000 times in over 142 countries and has quickly become one of the most popular open source applications. If you are managing a group project we recommend Projects On Demand. If you want a free replacement to commercial desktop software, then OpenProj is perfect. OpenProj is also now included with Star Office in Europe. It’s available on Linux, Unix, Mac or Windows, and it’s free.
It can be downloaded from http://www.openproj.com