Network Message (NMSG) is a set of tools that is used for standardizing the dissemination of real time information for effective usage. It defines both a format as well as the transport. The file format is based on Google Protocol Buffers and offers the same advantages of encoding structured data into an efficient yet extensible format. The transport is based on unidirectional UDP broadcast messages with enhanced data fragmentation and coalescing handling capabilities.

Both SIE and SDRN make extensive use of NMSG. It was developed specifically to provide a platform for efficiently passing real-time high-volume data and provides many enhancements to prior generations of work.