ngrok builds a unified ingress platform that lets developers expose, secure, and route traffic to services running anywhere—from local dev to production. It sells cloud software and subscriptions used for secure tunneling, API delivery, and AI gateway controls, replacing ad‑hoc proxies and VPNs. Founded in 2015 and headquartered in San Francisco, the privately held company is used by teams at companies such as GitHub, Okta, Microsoft, Zoom, and Twilio.