ZeroTier, Inc. is a software company with a freemium business model based in San Francisco, California. ZeroTier provides proprietary software, SDKs[1] and commercial products and services to create and manage virtual software-defined networks. The company's flagship end-user product, ZeroTier One,[2] is a client application that enables devices, such as PCs, phones, servers, and embedded devices to securely connect to peer-to-peer virtual networks.[3][4][5]
ZeroTier also helps enterprises and public-sector organizations reduce their attack surface by replacing exposed networks with identity-based, end-to-end encrypted connectivity. Devices form direct peer-to-peer connections whenever possible, with optional gateways for controlled access to centralized services or the internet.[6]
In July 2024, ZeroTier announced that it had raised $13.5 million in a Series A funding round, bringing the company’s total funding to approximately $16 million.[7] The round was led by Battery Ventures, with participation from 7 percent Ventures, Airbridge Equity Partners, Anorak Ventures, Bonfire Ventures, First In Ventures, and Grand Enterprises B.V.[7]
ZeroTier markets proprietary tools, which are licensed under a Business Source License 1.1,[9] intended to support the development and deployment of virtual data centers:
In 2021, the product line consists of the following tools:
ZeroTier One, first released in 2014,[10] is a portable client application that provides connectivity to public or private virtual networks.
Central, a web-based UI portal for managing virtual networks.
libzt (SDK), a linkable library that provides the functionality of ZeroTier One but that can be embedded in applications or services.
LF (pronounced "aleph"), a fully decentralized fully replicated key/value store.
In May 2024, ZeroTier released version 1.14, followed by version 1.16 in September 2025.
In November 2025, ZeroTier launched its new Central, the next generation of ZeroTier's hosted network controller. It provides a streamlined interface for creating and managing ZeroTier networks, organizing them into groups, and controlling access across an organization[11].
Client
The ZeroTier client is used to connect to virtual networks previously created in the ZeroTier Central web-based UI. Endpoint connections are peer-to-peer and end-to-end encrypted. STUN and hole punching are used to establish direct connections between peers behind NAT. Direct connection route discovery is made with the help of a global network of root servers via a mechanism similar to ICE in WebRTC.
Controller
Virtual networks are created and managed using a ZeroTier controller. Management is done using an API, proprietary web-based UI (ZeroTier Central), open-source web-based.[12][13]
Packages
ZeroTier One is available on multiple platforms and in multiple forms:
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