Effnetplattformen Holding AB (publ) develops and licenses networking software solutions worldwide. It offers Effnet 5G protocol stack for use in terminals, such as cellular IoT devices, dongles, and access points, as well as test systems; Effnet 5G RAN, a software for use in base-stations, vehicle-to-everything communication devices, and test systems; and IP header compression products that are used in fixed, mobile, and satellite networks. The company was founded in 1997 and is based in Luleå, Sweden.