IPNetShareX Pro 1.0c5 (Mac)
Source: Sustainable Softworks
IPNetShareX is a small program that is Sustworks' entry-level Internet connection sharing program. It gives users graphical access to the Mac OS X Network Address Translation (natd) services. Natd is an inherent Mac OS X service which can be set up to share a single Internet connection among multiple computers without requiring a dedicated hardware router. IPNetShareX can be used as a Mac OS X alternative to the basic Internet sharing feature of IPNetRouter.