WinCIM

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WinCIM was Compuserve Information Service's client software for Microsoft Windows. The program was a GUI front end to the text based Compuserve service, being a version of the DOS CIM (Compuserve Information Manager) software. It allowed access to Compuserve's features, such as its forums, chat, e-mail, and messaging facilities. The first versions were released in the early 1990s. Later, Compuserve switched parts of its service over to a new binary protocol called HMI, or Host Micro Interface, which was more of a binary machine protocol and was not useable directly via a telnet client like the old text based interface, thus requiring the use of specialised client software like WinCIM.

After Compuserve was purchased by AOL, Compuserve began providing the AOL client software and its protocols as a way to access the service, however it continued to remain possible to connect to WinCIM via HMI, which became known as the Compuserve Classic service.

Other Compuserve client programs: