OpenTracker is distributed under the BSDLicense. Please see the disclaimer in the source code for details.
We only distribute source versions for Windows and Linux. It may work as well on other Unix systems, but we did not test that yet. There is also a Contribs section that has additional libraries for some optional device drivers etc.
The latest released version is OpenTracker 2.0.0 (see below). Developers version can be checked out of the Subversion repository. If you need to do that, please contact the project administrator.