The SNESoIP ethernet adapter for the Super Nintendo Entertainment System (also known as the Super NES, SNES or Super Nintendo) is an open-source, proof-of-concept, network-bridge for sharing local controller-inputs over the Internet.
The project it currently in its early stage, but fully functional and could be used to play multiplayer games over the Internet. Also some kind of server-controlled BBS system could be conceivable as a future project.
The project is hosted on GitHub: github.com/mupfelofen-de/SNESoIP