FidoNet, and FidoNet Technology Networks (FTN), are international amateur networks of computer systems. They often operate a public access BBS and all are connected via modem and/or via the Internet as well. FidoNet1) remains today an active worldwide BBS message and file distribution network.
FidoNet networking technology is mostly described in proposals and adopted standards by the FidoNet Technical Standards Committee.
FidoNet networking technology is used for many other BBS networks (unrelated to the mainstream FidoNet), often referred to as FidoNet Technology Networks (FTN) or “othernets”.