ZeroTier, Inc. is a private networking software and cybersecurity company that develops a software-defined networking (SDN) platform used to create and manage secure virtual networks over the public internet. Its flagship product, ZeroTier One, is a lightweight client that runs on servers, cloud VMs, desktops, laptops, mobile, routers, and embedded devices, enabling them to join end‑to‑end encrypted, zero‑trust, peer‑to‑peer virtual networks that behave like local LANs regardless of physical location. The company’s platform supports use cases including secure remote access VPN replacement, multi‑cloud and hybrid‑cloud connectivity, software‑defined WAN (SD‑WAN), IoT and Industrial IoT networking, SCADA and industrial automation connectivity, and general-purpose private networking for individuals, SMBs, and enterprises. ZeroTier offers both free and commercial plans with a freemium business model, web-based management, orchestration tools, SDKs, and enterprise features such as centralized control, identity-based access, and post‑quantum‑ready security capabilities. Its technology is used by millions of devices worldwide across industries such as information technology, telecommunications, manufacturing, robotics, energy, automotive, aerospace, media, and defense.
