Key differences, specifications and fit guidance for Tailscale and ZeroTier, compiled from official documentation and the iThub profiles.
Tailscale connects devices and services in a private network called a tailnet, with identity-based access policies, traffic routing and an API for automation.
ZeroTier connects devices, VMs and containers into virtual Layer 2 networks over an encrypted peer-to-peer protocol. ZeroTier One agents run on desktop, mobile, NAS and Docker; networks are managed in ZeroTier Central or a self-hosted controller.
Choose Tailscale if you want a WireGuard-based mesh where users sign in with your existing identity provider and access policies follow those identities; choose ZeroTier if you need a virtual Ethernet network that behaves like one LAN across sites, with SDN-style rules and an option for self-hosted or air-gapped deployments. Both connect devices peer to peer and fall back to relays. The deciding factors are the network model (routed WireGuard mesh versus virtual Layer 2 switch), how much of the control plane you need to run yourself, and per-seat versus per-device licensing.
Choose Tailscale ifShortlist Tailscale when access should follow user identities from your existing identity provider, you want a managed Zero Trust connectivity service, and per-seat billing matches how your team grows.
Choose ZeroTier ifShortlist ZeroTier when devices across sites must behave as if on one Ethernet network, you need micro-segmentation rules per network, or you plan a self-hosted or air-gapped deployment.
| Aspect | Tailscale | ZeroTier |
|---|---|---|
| Network model | Tailscale builds a peer-to-peer mesh of encrypted WireGuard point-to-point connections, called a tailnet, and can still act like a traditional VPN by routing traffic through an exit node. | ZeroTier emulates an Ethernet switch: a peer-to-peer layer (VL1) carries an Ethernet emulation layer (VL2), so devices communicate as if they shared one data center network. |
| Identity and access control | Users authenticate through an existing identity provider, and a new tailnet starts with a default set of access policies that administrators then refine. | Access is set per virtual network by its network controller, which admits members, and VL2 adds fine-grained rules for micro-segmentation and security monitoring. |
| Control plane | Tailscale's hosted coordination server is proprietary and part of its managed service; the independent open source Headscale project offers a self-hostable coordination server for single-tailnet use. | ZeroTier hosts network controllers as a service, and its reference controller, which issues certificates and configuration, can also run in Docker or other containers on your own systems. |
| Source licence | The client is mostly open source: the daemon is open on every platform, while the GUI on closed operating systems such as Windows and macOS is closed source. | The ZeroTier agent is MPL-2.0, but the controller code in the nonfree directory is source-available for non-commercial use, and commercial use needs a separate licence. |
| Relays and encryption | Private keys never leave the device; when direct paths fail, DERP relay servers forward already-encrypted traffic, and teams can self-host their own DERP servers. | Traffic is encrypted end to end with keys only you control; most of it flows peer to peer, and ZeroTier offers free but slow relaying when a direct path is not possible. |
| Pricing model | Billing is per seat, chosen at the start of each month; the pricing table lists $0 for up to 6 users, then $8 and $18 per user per month, and custom Enterprise pricing. | A free personal licence covers hobbyists, business licences cover small and large deployments, and custom pricing applies above 500 devices or for compliance and self-hosted deployments. |
| Platforms and footprint | Linux and Android clients can be built fully from source, and Windows and macOS clients can be built without the GUI; free use covers individuals connecting devices, servers or software. | Free Android and iOS apps are available, and ZeroTier says its options range from a handful of devices to millions, in the cloud or fully air-gapped. |
From the iThub profiles. “Not recorded” means the profile does not confirm it. Confirm prices and editions with each vendor.
| Attribute | Tailscale | ZeroTier |
|---|---|---|
| Starting price | From $8.00 ↗ | Free edition or plan ↗ |
| API | Yes ↗ | Yes ↗ |
| Founded | 2019 | 2013 |
| Headquarters | Toronto, Canada | San Francisco, California, USA |
| GitHub stars | 38.7K ↗ | 17.2K ↗ |
| Documentation | Official docs ↗ | Official docs ↗ |
TailscaleTailscale is a Zero Trust, identity-based connectivity platform for development, IT, and security teams. It connects remote users, devices, and services in a private network called a tailnet, with access policies for users, devices, and applications. Its documented scenarios include remote teams, multi-cloud environments, CI/CD pipelines, edge devices, and AI workloads.
Deployment starts with installing Tailscale, creating a network, and inviting users. Subnet routers extend access to services within specific subnets, while exit nodes can route internet traffic through a selected device. A client command-line interface and an API support administration and automation. The CLI is available on Linux, macOS, and Windows, but not on iOS or Android.
ZeroTierZeroTier is a virtual networking system that lets networked devices, VMs, containers and applications communicate as if they were on the same physical network. The ZeroTierOne README describes it as a programmable Ethernet switch that combines a cryptographically addressed peer-to-peer network, called VL1, with an Ethernet emulation layer similar to VXLAN, called VL2. VL2 adds access control rules for network micro-segmentation and security monitoring. Most traffic flows directly between peers, and ZeroTier offers free but slow relaying for nodes that cannot connect directly.
ZeroTier is developed by ZeroTier, Inc. The about page names Adam Ierymenko as founder and states that two years of spare-time coding led to an open-source release in 2013; the company terms of service give a San Francisco, California address. The product consists of the ZeroTier One agent, installed on every device, and a network controller that issues network configuration. ZeroTier Central is the hosted controller service, and the New Central documentation describes it as the next generation of that hosted controller, organized into organizations, network groups and networks.
Both tools connect devices across networks without a central VPN concentrator, but they model the network differently. Tailscale builds an encrypted WireGuard mesh tied to user identities from your identity provider, run from a proprietary hosted coordination server. ZeroTier presents a virtual Ethernet switch with per-network controllers and SDN-style rules, with an MPL-2.0 agent and a source-available controller.
List what must connect (laptops, servers, IoT devices, whole subnets) and whether access should follow user identity or network membership. Decide who runs the control plane, check the licence terms for any self-hosted component, and model cost against your user and device counts with each vendor.
Connect the same set of devices with each tool: two laptops on different home networks, one cloud VM, one on-premises server behind NAT and one mobile phone. Apply a rule that blocks one pair, measure latency and throughput direct and relayed, onboard and remove a user, and time how long each step takes.
The network model. Tailscale creates a mesh of encrypted WireGuard point-to-point connections, called a tailnet, where users log in through an identity provider and access policies apply to them. ZeroTier emulates an Ethernet switch, combining a peer-to-peer layer with an Ethernet virtualization layer so devices behave as if they were on the same LAN, with SDN-style access rules per network.
Partly. The ZeroTier agent that runs on devices is licensed under the Mozilla Public License 2.0. The network controller and related components in the repository's nonfree directory are under a source-available licence for non-commercial use, and commercial use of those components requires a separate commercial licence agreement with ZeroTier, Inc.
The Tailscale client is mostly open source: the daemon is open source on every platform, and the GUI is open source only where the operating system is too, such as Linux and Android. Tailscale's hosted coordination server is proprietary. Headscale, an independent open source project, provides a self-hostable coordination server for single-tailnet use cases.
Partly for both. With Tailscale, you can self-host DERP relay servers, and the separate Headscale project replaces the coordination server for a single tailnet, while Tailscale's own coordination service stays proprietary. ZeroTier's reference network controller can run in Docker on your own systems, but commercial use of it needs a commercial licence, and ZeroTier lists self-hosted deployments under custom pricing.
Tailscale bills by seat: you choose the number of seats at the start of the month, and its pricing table lists $0 for up to 6 users, $8 and $18 per user per month, and custom pricing. ZeroTier offers a free personal licence for hobbyists, business licences for small and large deployments, and custom pricing for 500 or more devices, compliance requirements or self-hosting.
Yes. Tailscale private keys never leave the device that generated them, so its DERP relay servers only forward already-encrypted traffic and cannot decrypt it. ZeroTier encrypts all traffic end to end with secret keys that only you control. Both send most traffic directly between devices and relay it only when a direct connection cannot be made.
Facts on this page come from these official pages, checked on , and from the iThub profiles. Vendors change plans and features: confirm with them before buying.
