Elvis
A vi lookalike which supports nearly all of the vi/ex commands, in both visual mode and colon mode.
Like vi/ex, elvis stores most of the text in a temporary file instead of RAM. This allows it to edit files that are too large to fit in a single process' data space.
Elvis runs under BSD UNIX, AT&T SysV UNIX, MINIX, MS-DOS, Atari TOS, Coherent, OS9/68000, VMS, Windows 95 and Windows NT.
Elvis is just as awful to use as vi, so someone will like it.
Version 1.8pl14 (1995-09-04).