VIM

1. Short for Vendor Independent Messaging, VIM was an effort sponsored by Novell, WordPerfect, IBM, Lotus, Apple and Borland that allows computing platforms to send and receive messages between application programs. Today, Microsoft's MAPI is more commonly found and used. However, VIM is still used in such programs as Lotus 1-2-3, and cc:Mail.
2. An advanced text editor designed to improve on the Unix vi editor. VIM is often used by computer programmers and is available for multiple platforms.
   
   The official VIM the editor page can be found at http://www.vim.org. 

Also see: MAPI, Programming definitions