NetFoundry ranks #8 in Developer Tunnels & Localhost Ingress AI search.

NetFoundry is a Charlotte, NC-based company and the creator of OpenZiti, the world's most widely used open-source zero-trust networking software. Founded in 2016, it operates a dual-product portfolio: the NetFoundry Platform, a cloud-native Network-as-a-Service (NaaS) for enterprise zero-trust overlay networking, and zrok, an open-source developer-tunnel tool built on OpenZiti that enables secure localhost and service sharing without opening firewall ports. NetFoundry serves over 2,000 organizations, including 8 of the 10 largest U.S. banks, processing over 1 billion sessions per month across 100+ global Points of Presence. In April 2025, the company raised its first external funding, a $12 million Series A from SYN Ventures, after operating self-funded since inception.

NetFoundry is the commercial developer and operator behind OpenZiti—the leading open-source zero-trust networking framework—and zrok, an open-source developer tunneling product. In the Developer Tunnels vertical, zrok enables developers to securely share local services, web servers, and files over the internet with no firewall ports opened, using OpenZiti's zero-trust overlay for identity-based mutual TLS. For enterprises, the NetFoundry Platform provides a managed NaaS that replaces VPNs, secures APIs, connects IoT/OT, and enables app-embedded zero-trust networking through multi-language SDKs.