The Internet TCP port 850 is commonly used by ColdFusion, a commercial rapid web-application development platform created by J.J. Allaire in 1995. Adobe Systems, which acquired the technology in 2005, primarily uses this port for its ColdFusion services. Additionally, port 850 is also used by the Message Queuing Telemetry Transport (MQTT), a lightweight messaging protocol for small sensors and mobile devices. However, it's important to note that the usage of this port can vary depending on the specific configurations of the software or system.
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