Debian GNU/Linux: gopherd
Information and downloads for the Debian package of the UMN gopher server.

Floodgap Gopher Proxy
Public gopher-to-HTTP proxy to allow the use of web browsers to explore gopherspace.

GoFish
A simple, fast, low resource usage gopher server. Can also function as a web server and a gopher-to-HTTP gateway.

Gopher Manifesto
The Bring Back Gopher Campaign.

PyGopherd
An multi-protocol gopher server written in Python. Also works as an HTTP server.

PyGS
Gopher server written in Python. No longer being developed.

RFC 1436
The Internet Gopher Protocol (a distributed document search and retrieval protocol).

Veronica FAQ
Common questions and answers about veronica, a title search and retrieval system for use with the Internet gopher.