Usage
Convergent Technologies' first product was the IWS (Integrated Workstation) based on the Intel 8086 processor, which had CTOS as its operating system. This was a modular operating system with built-in local area networking. CTOS supported multiple processes or threads, and message-based interprocess communication.
Companies that licensed CTOS included Bull (STARSYS), and Burroughs (BTOS) and who later merged with Sperry to become Unisys. Unisys was the single largest customer with whom Convergent Technologies merged to become one company in 1988. At its peak, CTOS had over 800,000 users worldwide. Diskless workstations (e.g., Bull) used the Intel 80186 processor, a processor seldom used by standard PCs.
Progress Software Corporation made a commercial database application for CTOS that was in 4GL. The United States Coast Guard used these databases for logistics administration for their vessels.
There was a port of CorelDRAW for CTOS running the Presentation Manager.
CTOS is no longer marketed to new customers; former major customers included police forces, banks, airlines, the U.S. Postal Service, the Drug Enforcement Administration, the U.S. Army and the United States Coast Guard. The Coast Guard used the operating system from approximately 1986 until 2000. In Australia, CTOS/BTOS was used by the Trade Practices Commission, NSW Auditor-General's, CSIRO, Commonwealth Electrol Office and many commercial banks.
Though CTOS was not used in the modernized world, most of the concepts such Messaging, Request/Respond, Service, Exchange, etc. are the foundation bricks of the SOA stylish architectures. The plug-and-play evolved from CTOS.
Read more about this topic: Convergent Technologies Operating System
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