Gopher is a menu-based navigation tool for the Internet.
You can travel through the Gopherspace by selecting items from menus. Veronica indexes files on Gopher sites. Instead of going from menu to menu, the user can search the Internet by one or more keywords. Just like Archie indexes FTP archives, Veronica indexes the file directories and menus in Gopher sites. ColumbiaNet is the Gopher site of Columbia University.