Established in 1993, InterWorking Labs was co-founded by Marshall Rose and Chris Wellens and produced its first SNMP interoperability test summit in January of 1994.

InterWorking Lab creates network testing, network emulation, and network optimization products including penetration testing products, WAN emulators, bandwidth emulators, satellite emulators, network traffic testers and network traffic analyzers to improve the quality and operation of voice and data networks. Developers, IT managers, and test engineers use their network testing products, network simulators and network analyzers to find and fix bugs in network devices. Their network emulation products are used for pre-deployment testing, proof-of-concept demonstrations, and "what-if" scenarios. Their network simulators and network traffic analyzers are used to optimize internal network performance.

IWL software based products includes SilverCreek- SNMP Test Suite, Boreal – SNMP Vulnerability Test Suite & Maxwell – Network Emulator. SilverCreek network tester contains hundreds of thousands of tests that cover protocol conformance, compliance, stress testing, robustness/vulnerability testing, negative, inopportune, and interoperability testing. Boreal automatically test all the network devices in a network, through an automated command line script. The Maxwell and Mini Maxwell network emulators help developers and end users create more realistic network emulation scenarios by providing standard packet impairments, as well as protocol impairments and support for concurrent multiple flows of network traffic. Maxwell supports a set of protocol impairments for TCP/IP, DHCP, ICMP, and SIP testing.