The most recent stable release (1.1) can be downloaded here.
To access ENet via anonymous CVS, you must use the CVSROOT :pserver:anonymous@bespin.org:/var/lib/cvs/enet with an empty password.
$ cvs -z3 -d :pserver:anonymous@bespin.org:/var/lib/cvs/enet login
$ cvs -z3 -d :pserver:anonymous@bespin.org:/var/lib/cvs/enet co -l . $ cvs -z3 co enet
This will create a CVS directory in the current directory, and with the second command will proceed to check the enet module out of CVS. Any problems with CVS access or request for write access should be sent via email to ENet Mailing List.