Emacs 23.1 ships with Cocoa support. You can build it by following the instruction below.
Check out the source code using git:
bash$ git clone git://git.savannah.gnu.org/emacs.gitConfigure and build the Emacs Application:
bash$ ./configure --with-nsbash$ make installWhen the build is complete, you should see Emacs.app in ./nextstep/Emacs.app. Simply copy it to your applications folder and open it to run.