FOR BEST RESULTS, USE AT LEAST EMACS REVISION 110135. You'll need to build from source, at least until Emacs 24.3 is officially released. Earlier revisions contain a nasty bug that can cause your Emacs to segfault when using auto-complete.
- http://cx4a.org/software/auto-complete/
- doc/index.txt
Auto Complete Mode is distributed under the term of GPLv3. And its documentations under doc directory is distributed under the term of GFDL.