KoolSpan

KoolSpan makes end-to-end encrypted mobile communications software for organizations that cannot rely on consumer messaging apps for sensitive calls, texts, and file transfers. Its flagship product, TrustCall, runs on standard Android and iOS devices and provides encrypted voice, video, messaging, and file sharing, deployable as-a-service, on-premises, or in hybrid configurations, with centralized policy enforcement and management APIs for enterprise and government IT teams.

The company’s core differentiator is FIPS 140-2 validation of TrustCall’s cryptographic modules — a U.S. government cryptographic standard that requires formal, independent laboratory testing rather than a vendor’s own security assertions. Combined with 33 issued patents, that validation has made TrustCall a fit for defense, intelligence, and government buyers with strict procurement requirements around cryptographic assurance, and KoolSpan reports customers across more than 60 countries, including deployments through channels serving the U.S. Department of Defense and intelligence community.

Based in Bethesda, Maryland and founded in the early 2000s, KoolSpan is a privately held, mature company operating in a narrow but persistent niche: secure mobile voice and messaging for government and high-security enterprise use, distinct from consumer end-to-end encrypted messaging apps that lack formal cryptographic certification or centralized enterprise management. Its longevity and government-grade certification are real strengths, though the company has not disclosed venture funding, revenue, or recent independent third-party audits beyond the original FIPS validation.