acl_cpp(which has been included in acl project: https://sourceforge.net/projects/acl/ , please download it from acl project url) is a c++ wrap library for acl, and acl_cpp has many more useful functions than acl, such as streaming mime parsing, handler socket supporting, and db(mysql and sqlite) pool interface, HttpServlet, etc. With acl_cpp, you'll get more powerfull acl functions, and the quickly development, module programming, good luck!