ZeroTier

ZeroTier is software-defined networking for connecting devices, clouds, and data centers through virtual networks. It suits teams that need centrally managed connectivity across mixed infrastructure, as well as individuals with modest non-commercial needs. Its flexible reach and policy controls are compelling, but device limits and escalating per-device charges deserve attention as deployments grow.

Overview

ZeroTier builds secure virtual overlays across public clouds, private data centers, on-premises systems, remote devices, and edge environments. That makes it a useful fit for organizations managing connectivity across more than one kind of infrastructure, rather than only linking users to a single private network.

Cryptographic device identity, end-to-end encryption, and peer-to-peer connections when possible form the security foundation. Centrally defined policies are enforced globally, giving administrators a consistent way to govern access across distributed networks. The platform supports both Layer 2 and Layer 3 networking, identity-based access control, and programmable network management.

Key features

ZeroTier covers cloud-to-cloud networking and global device fleets, with infrastructure-as-code support and VPN and firewall policy management. It supports DigitalOcean, Amazon Web Services, Google Compute Engine, Microsoft Azure, Oracle Cloud Infrastructure, Alibaba Cloud, IBM Cloud, Vultr, and Equinix Metal. Documentation includes API guides and tutorials for Docker, code-server, Terraform, webhooks, and Prometheus/Grafana monitoring, giving technical teams routes to automate and integrate network operations.

One notable gap is network monitoring: ZeroTier does not include it. Teams needing monitoring should plan to use other tooling rather than treating the networking platform as an all-in-one operations console.

The maker lists SOC 2 Type II, FIPS 140-3, and GDPR among its trust badges. ZeroTier Quantum is a separate high-security offering that implements the CNSA 2.0 algorithm suite, including ML-KEM-1024 and ML-DSA-87; the maker also says it can run air-gapped, with local policy enforcement and endpoints generating and holding keys. Its focus is sovereign and mission-critical environments, and its custom pricing puts it in a different buying conversation from the standard plans.

Pricing

ZeroTier is freemium, with paid plans starting at $18 a month. Personal has no published price and is for non-commercial use; it allows 10 devices, one network, and one network admin. Community support is included. Its strict device and network caps make it suitable for personal setups, not growing commercial deployments.

Essential costs $18 a month, billed per month. It includes 10 devices, with each additional device costing $2.00, plus 10 networks, five admins, API and AI agent access, OIDC SSO, and 30-day audit logs. Community support remains the support option. The plan adds meaningful administration and identity features, but the per-device charge can add up for larger fleets.

Scale costs $179 a month, billed per month. It includes 100 devices, with each additional device at $1.80, unlimited networks, 10 admins, custom flow rules, and ticketed support with an SLA. This is the more capable choice for larger deployments that need custom policy and formal support, though the monthly commitment is substantially higher than Essential.

Enterprise has custom pricing and starts at 500 devices, with unlimited networks and admins and 90-day audit logs. It includes priority support with an enhanced SLA, making it the tier aimed at large organizations with stronger support and audit requirements. Quantum also uses custom pricing and is positioned for post-quantum networking in high-security, sovereign, and mission-critical environments.

Platforms

ZeroTier supports Android, iOS, Linux, macOS, and Windows, alongside API, web, and self-hosted options. That breadth suits mixed-device environments and teams that need to manage networking programmatically or operate their own deployment.

Who it's for

Choose ZeroTier if you need virtual networking across cloud providers, data centers, on-premises infrastructure, and remote devices, with centrally enforced policy and several plan levels. Personal is the constrained option for non-commercial use; Essential suits smaller commercial setups needing API access or SSO; Scale and Enterprise are better aligned with larger device fleets and support requirements. Look elsewhere if built-in network monitoring is a must, or if your deployment would quickly outgrow the lower tiers’ device allowances.

Pros and cons

• Pros: It connects across cloud, on-premises, and remote environments, giving mixed infrastructure a shared virtual-network layer.
• Pros: Device identity, encrypted traffic, and centrally enforced policy give administrators security controls across distributed networks.
• Pros: API access, infrastructure-as-code support, and tutorials for tools such as Terraform and Docker give technical teams practical integration paths.
• Cons: Personal is limited to non-commercial use, 10 devices, one network, and one admin, so it is not a route to a free business deployment.
• Cons: Essential and Scale charge for devices beyond their included allowances, which makes fleet growth a direct cost consideration.
• Cons: Network monitoring is not included, so teams must account for a separate monitoring approach.

Alternatives

Tailscale is worth considering for individuals or small groups who prioritize a free plan with up to six users and unlimited user devices; its listed platforms cover Android, iOS, Linux, macOS, web, and Windows. Alkira is a paid alternative with web access. Infoblox Cloud Network Automation is a paid option with API, Linux, self-hosted, web, and Windows platforms, using token-based licensing. PacketFabric is a paid alternative with API and web access and no free plan. Megaport Cloud Router is another paid API and web option, with no free plan. Equinix Fabric is a paid API and web alternative without a free plan. Cisco Catalyst Center is a paid option with broad platform support and a subscription requirement for managed devices. Cilium is a free, open-source Linux option for users whose needs fit its Linux kernel and architecture requirements.

Browse Cloud Network Management Software or Business VPN Software for more options in those categories.

Verdict

ZeroTier is a strong choice for teams that need secure, policy-managed virtual networking across varied infrastructure and value API-driven administration. Its clearest reason to choose is that breadth paired with centrally enforced controls; its clearest reason to look elsewhere is the cost and device accounting required as a deployment scales, along with the absence of built-in network monitoring. Personal users should stay within its non-commercial limits, while businesses should match the device allowance and support tier to their actual fleet.