Cartridges
The cartridge port is possibly the most versatile connector on the ST range with a variety of products being created to take advantage of it over the years. Below is just a sample.
Ultimate Ripper - Power Computing -
AN Cool Ripper
DVT VCR Hard Drive Backup System - Seymor
Deskcart - QMI - Battery Backed Cartridge
Spectre GCR - Macintosh Emulator
Spectre 128 - Macintosh Emulator
Fast Basic - Programming Language
Omicron Basic - Programming Language
SMS2 - Operating System
Logikhron LCM-200 Clock Card - First Real time clock for ST
Forget Me Clock II - Battery-backed real time clock
eSTe Clock Cartridge - Battery backed real-time clock with 2 EPROM sockets - Bigfoot Systems
Cartmaster - Connect up to 4 devices at once to the cartridge port - Software Switchable
Cartmaster Lite - Connect up to 2 devices at once to the cartridge port - Software Switchable
Midex+
Atari Robokit - Robot interface