ZeroTier

ZeroTier is secure software-defined networking software for connecting people, devices, and cloud environments. It builds virtual network overlays across public clouds, private data centers, on-premises environments, remote devices, and edge systems. Security measures include cryptographic device identities, end-to-end traffic encryption, peer-to-peer connections when possible, and centrally defined policies enforced globally. Capabilities include cloud-to-cloud networking, global device fleets, identity-based access control, Layer 2 and Layer 3 networking, and programmable network management. Its platform supports Android, iOS, Linux, macOS, Windows, web, API, and self-hosted use. The Personal plan is for non-commercial use and covers 10 devices, one network, and one administrator. Essential costs $18 a month; Scale costs $179 a month. Quantum is described as post-quantum networking and can be deployed in air-gapped environments. ZeroTier’s site lists SOC 2 Type II, FIPS 140-3, and GDPR trust badges. Support varies by plan, from community support on Personal and Essential to priority support with enhanced SLA on Enterprise.

ZeroTier combines broad deployment coverage with centrally managed policies and multiple network capabilities. Plan limits and support levels vary, and the listed paid tiers start at $18 a month.

ZeroTier suits organizations connecting devices and cloud or on-premises environments under centrally managed network policies. Personal is limited to non-commercial use; Quantum is described for high-security, sovereign, and mission-critical environments.

ZeroTier is a software-defined networking platform for connecting devices and infrastructure across private networks, clouds, and remote locations. It is best suited to teams that need centrally governed connectivity across a mixed environment; smaller non-commercial networks can use its Personal plan. Its broad networking scope is a strength, but paid device charges make growth worth budgeting for.

Overview

ZeroTier creates virtual overlay networks that can span public clouds, private data centers, on-premises systems, remote devices, and edge environments. That reach makes it a practical choice when an organization needs to connect more than one type of infrastructure rather than manage a single site or cloud in isolation.

Its security model combines cryptographic device identity, end-to-end traffic encryption, peer-to-peer connections when possible, and centrally defined policies enforced globally. Layer 2 and Layer 3 networking, identity-based access control, and programmable management give administrators several ways to shape a network. The trade-off is that network administration and access capacity depend on the chosen plan.

Key features

ZeroTier supports cloud-to-cloud networking and global device fleets, alongside VPN and firewall policy management and infrastructure-as-code capabilities. Its cloud coverage includes DigitalOcean, Amazon Web Services, Google Compute Engine, Microsoft Azure, Oracle Cloud Infrastructure, Alibaba Cloud, IBM Cloud, Vultr, and Equinix Metal. That breadth is useful for organizations with varied hosting choices; it is less compelling if the requirement is a dedicated network-monitoring tool, since network monitoring is not a capability.

Documentation includes API guides and tutorials for Docker, code-server, Terraform, webhooks, and Prometheus/Grafana monitoring. These integrations can help teams connect ZeroTier to existing automation and observability workflows, though monitoring remains an adjacent integration rather than a built-in network-monitoring feature.

The maker’s trust badges include SOC 2 Type II, FIPS 140-3, and GDPR. ZeroTier Quantum is presented for high-security, sovereign, and mission-critical environments: it implements the CNSA 2.0 algorithm suite, including ML-KEM-1024 (FIPS 203) and ML-DSA-87 (FIPS 204). The maker says Quantum can run fully air-gapped, with policy enforced locally and endpoints generating and holding keys exclusively. Those are specialized capabilities for organizations with stringent security or sovereignty requirements, not a reason for every small network to choose the Quantum tier.

Pricing

ZeroTier uses a freemium model. Personal is intended for non-commercial use and includes 10 devices, one network, and one network admin. It suits an individual or small non-commercial setup, but the single-network and device caps constrain broader use.

Essential costs $18 a month, billed per month. It includes 10 devices, with additional devices at $2.00 each, 10 networks, five admins, API and AI agent access, OIDC SSO, and 30-day audit logs. This is the entry paid tier for teams that need multiple networks, more administrators, or those management and identity features; the per-device charge can raise the bill as a fleet expands.

Scale costs $179 a month, billed per month. It includes 100 devices, additional devices at $1.80 each, unlimited networks, 10 admins, custom flow rules, and ticketed support with an SLA. It is a better fit for larger deployments needing many networks and a formal support commitment, though it costs substantially more than Essential before any device overage.

Enterprise has custom pricing and includes 500 or more devices, unlimited networks and admins, 90-day audit logs, and priority support with an enhanced SLA. It fits organizations that need that scale and support level; the commitment is less suitable for buyers seeking a transparent published price. Quantum also has custom pricing and is aimed at high-security, sovereign, and mission-critical environments. Personal and Essential include community support, which is a meaningful limitation for teams that require ticketed or priority assistance.

Platforms

ZeroTier supports Android, iOS, Linux, macOS, and Windows, as well as API, web, and self-hosted options. That mix accommodates both user devices and infrastructure-oriented deployments.

Who it's for

Choose ZeroTier if you need to connect devices and clouds across a hybrid environment and want centrally enforced policy, multiple network layers, and programmable management. It is also a reasonable fit for non-commercial users who can work within Personal’s 10-device, one-network allowance. Look elsewhere if built-in network monitoring is essential or if a growing device count makes per-device billing unattractive.

Pros and cons

• Pro: Virtual overlays span public clouds, private data centers, on-premises systems, remote devices, and edge environments, making it suited to mixed deployments.
• Pro: Cryptographic identity, end-to-end encryption, and globally enforced policies provide several coordinated security controls.
• Pro: Layer 2 and Layer 3 networking, API access on Essential, and Terraform-related documentation support different networking and automation needs.
• Con: Personal is limited to non-commercial use, 10 devices, one network, and one admin.
• Con: Essential and Scale charge for devices beyond their included allowances, so larger fleets require attention to recurring costs.
• Con: Network monitoring is not included, and the lower support tiers rely on community support.

Alternatives

For a broader directory of options, see Cloud Network Management Software and Business VPN Software.

Choose Cloudflare Access instead if its free plan for under 50 users or its $7 a month Pay-as-you-go plan better matches your needs. Choose Tailscale if its free Personal plan for up to six users and unlimited user devices better suits a small network.

F5 BIG-IP APM, Cilium, Infoblox Cloud Network Automation, NetBox, OpenStack Neutron, and EfficientIP SOLIDserver DDI are also alternatives to consider.

Verdict

ZeroTier is a strong choice for teams that need centrally managed networking across varied infrastructure, especially when Layer 2 and Layer 3 options and a range of cloud providers matter. Its principal drawback is the cost and planning that come with device limits and overages; choose another option if built-in monitoring or predictable fleet pricing is more important than its broad overlay-network capabilities.