Jerry Horanoff was the creator of the Carina bulletin board
system software for the Atari 8-bit computers, and later, Carina
II.
The October 1986 issue of ANTIC Magazine wrote: "This
expandable, module-based bulletin board software package is written
in understandable BASIC and includes XMODEM upload/download
transfer protocol, message editor with word processor-like
functions and a total of 44 commands, including 17 sysop functions.
It operates at 300, 1200 or 2400 baud and works with most DOSs and
BASICs."
Jerry also created Ultramon, a disassembler. Later he worked
at ICD and Commodore.