Forum Systems is a software and security technology company headquartered in Needham, Massachusetts. The company develops and delivers API security gateways, AI middleware, and Zero Trust solutions for use in government and commercial enterprise environments. Their core product, Forum Sentry, is an API gateway that provides security controls for on-premise and cloud-native deployments. The platform is HITRUST r2 certified, reflecting compliance with healthcare and enterprise data protection standards. Forum Systems also operates a subsidiary, Quantum Gears, which focuses on AI and large language model (LLM) infrastructure, including a product called QuantumSim — a secure, multi-LLM middleware platform designed to manage generative AI workloads with data privacy controls, dynamic guardrails, and policy enforcement. The company also develops API testing and simulation tools, which it reports are deployed across more than 100,000 sites globally, supporting functional, performance, and security testing of APIs and cloud communications. An additional product, SecureGPT, is described as a multi-LLM gateway with obfuscation capabilities for data privacy. Forum Systems targets sectors including healthcare, public sector, financial services, manufacturing, aerospace, and retail. Their technology is positioned for organizations undergoing modernization and adopting next-generation architectures. The company has established partnerships with organizations such as NASCO and Converge Technology Solutions, with a noted focus on healthcare payer use cases.