General page for both programs: http://brainvisa.info/
Anatomist information: http://brainvisa.info/doc/brainvisa/en/processes/aboutAnatomist.html
BrainVisa implements a pipeline environment for batch processing imaging data. It is written in Python, and has a rather nice GUI. Its main uses are for anatomical image processing and AnalyzingDiffusion.
Anatomist is an image display program that is well integrated with BrainVisa.
It is installed on our imaging system. To run it on the linux systems, first do
setenv PATH /imaging/local/linux/brainvisa/bin:$PATH
then you can run BrainVisa with brainvisa, and similarly anatomist.
Anatomist may not be of much use to you, because it relies on OpenGL graphics features that do not work over our VNC or remote X connections. You'll probably end up having to install it on your own machine. See: http://brainvisa.info/download.html