Since Acme-SAC is dead and because other people could be interested as well:
The Acme user interface including the 9P protocol is a part of
Plan 9 from User Space. Depending on your distribution, you might be able to just grab it from the package manager of your choice. Otherwise, you can safely
build and install it by copying and pasting commands from a text file. This is surprisingly un-annoying to do.
