1. A protocol for sending e-mail, newsgroup postings, and files over telephone lines. The protocol originated on the Fido BBS, initiated in 1984 by Tom Jennings, and maintaining low costs has been a factor in its subsequent development. Fidonet can exchange e-mail with the Internet.
2. The network of BBSs, private companies, NGOs (nongovernment organizations), and individuals that use the Fidonet protocol.