$ git clone http://pp.ipd.kit.edu/git/libfirm.git
$ git clone http://pp.ipd.kit.edu/git/cparser.git
$ git clone https://github.com/libfirm/firm-testsuite.git
The main development repositories use git and can be found here:
$ git clone http://pp.ipd.kit.edu/git/libfirm.git
$ git clone http://pp.ipd.kit.edu/git/cparser.git
$ git clone https://github.com/libfirm/firm-testsuite.git
You may also browse the repositories with git-web: