Holy crap, Crosstalk XVI. Almost forgot about that one. Edit: Forgot to mention it's a terminal emulator that supported a few file transfer protocols like kermit and xmodem. My father used it to send programs to his CNC machines. I remember getting it working in Windows 3.1 but he did not like or care for Windows as all of the software he ran was DOS: Design CAD 3D, Q&A for word processing and database, and a custom payroll program his friend wrote. His favorite game was gorilla.bas.