The homepage of a popular Vi clone available for many operating systems.

Nvi is an implementation of the Ex/Vi text editor originally distributed as part of the Fourth Berkeley Software Distribution (4BSD).

A getting started guide for Vi users.

Free Notepad replacement highly compatible with the Vi editor issued under the GPL license.

Tutorial based on the graphical cheat sheet created for people learning Vi or Vim.

Basic equivalent Emacs editor commands and operations for users of the Vi editor.

The Bvi editor is a display-oriented editor for binary files, based on the Vi text editor.

An excellent paper written by the author of Vi, Bill Joy