Your Commodore 64/128 machine can join the growing ranks of Internet capable systems by installing the 64NIC+ Ethernet interface. 64NIC+ offers inexpensive Ethernet connectivity and more. Based on the Crystal CS8900 10 megabit Ethernet interface engine, the interface emulates the popular RR-NET solution as well as the NET64 and TFE systems.
Designed by RETRO Innovations initially as a fundraiser for the Cincinnati Commodore Computer Club (CCCC), 64NIC+ allows the Commodore user to experience online connectivity in true 8-bit glory. Play online Ethernet games, telnet to your favorite BBSes, and tweet from your Commodore!
Net64 and various Ethernet carts
Unknown (please alert me if you know the authors)