I used to use ext2fsx on paanther, it worked quite well for the few times I am booting on mac os X.
But to use it on Tiger, itlooks like I need to compile it myself, right ? I try to follow the builds instructions in build.rtf, but I didn't quite understand it: setup.sh is not necessary anymore, AFAIK, and e2fsprogsbuild.sh did work. What next ? I tried to load the Xcode project, but the build failed.
I am using the CVS version, of course.
P.S: I don't know anything about Mac OS X programming, but I am quite proficient in C programming under linux