I found via google that the freesurfer is open source and wanted to download the sources. I found one following URL http://surfer.nmr.mgh.harvard.edu/fswiki/DevelopersGuide. The sources are available at CVS repository which requires USERname and MACHINEname to access them. I am wondering if I can download the sources ? If yes please send me the instructions how to download them. If your project is not open source, please let me know.