Are you referring to
http://cvs.openacs.org/ or
http://xarg.net/tools/cvs ?
Jeff's browser has package specific RSS feeds as well, it works pretty much the same way, you can specify whatever criteria you want, and get a feed from any page you are looking it.
Fisheye has the nice graphs. So far I like the viewcvs diffs better myself, I like the side-by-side view, but obviously that is an opinion.
Its interesting that Jeff's browser has almost all the same features. I wonder if anyone would be interested to add graphs with the graph package Nima contributed to OpenACS.