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Operating Systems · head to head

OpenWrt vs ZeroTier

OpenWrt logo

OpenWrt

Operating Systems

Linux firmware replacement for routers and embedded network devices, with a package manager and writable filesystem

From
Free
Rated
-
Full reviewWebsite
ZeroTier logo

ZeroTier

Networking

Software-defined mesh networking, free up to 10 devices and one network, then billed per device

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: OpenWrt support is per device and per hardware revision, so a model number that worked last year may point at a different chipset this year and be unsupported.; ZeroTier the free tier caps at 10 devices and 1 network, which a small business will outgrow quickly and then face both a base plan fee and per-device overage charges
  • They diverge on capability: OpenWrt covers Package manager, ZeroTier covers Peer-to-peer mesh networking.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which OpenWrt and ZeroTier actually diverge.

Attributes where OpenWrt and ZeroTier differ
AttributeOpenWrtZeroTier
Pricing modelOpen source, no licence feeFree up to 10 devices and 1 network, then per additional device per month
PlatformsRouters, Access points, x86-64, ARM, MIPS, Embedded gatewaysWindows, macOS, Linux, iOS, Android
CategoryOperating SystemsNetworking

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in OpenWrt

  • Package manager
  • LuCI web interface
  • Traffic shaping
  • VPN and DNS
  • VLAN and multi-network
  • OpenWrt One

Only in ZeroTier

  • Peer-to-peer mesh networking
  • Free personal tier
  • Per-device overage pricing
  • Multiple networks
  • Cross-platform clients

What people use each for

The jobs each tool is most often brought in to do.

OpenWrt

  • Extending the useful life of an ISP-supplied router that has stopped receiving security updatesnot ZeroTier
  • Separating guest, IoT and work devices onto VLANs on hardware that does not offer it nativelynot ZeroTier
  • Running WireGuard, ad blocking or DNS over TLS at the edge rather than configuring every clientnot ZeroTier
  • Building small industrial or retail gateways where a full Linux distribution is too heavynot ZeroTier

ZeroTier

  • A hobbyist or small home lab wanting free virtual LAN connectivity across devices without a business tiernot OpenWrt
  • A small business connecting a handful of remote offices or remote workers into one virtual network on the Essential plannot OpenWrt
  • A growing company scaling past the free device limit that needs multiple networks and predictable per-device overage pricingnot OpenWrt
  • A service provider or large IoT deployer needing custom Enterprise or Quantum packaging for very large device countsnot OpenWrt

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

OpenWrt

  • Support is per device and per hardware revision, so a model number that worked last year may point at a different chipset this year and be unsupported.
  • Flashing can brick a device permanently, and on hardware without a serial console or a recovery bootloader there is no way back.
  • Devices with 4MB or 8MB of flash have been dropped from recent releases, so a lot of older hardware is stuck on unsupported versions with known vulnerabilities.
  • Hardware acceleration for NAT and routing depends on vendor drivers, and enabling traffic shaping frequently cuts a gigabit connection to a fraction of its rated throughput.
  • A sysupgrade keeps your configuration but not your installed packages, so every release upgrade is followed by reinstalling and reconfiguring add-ons by hand.

ZeroTier

  • The free tier caps at 10 devices and 1 network, which a small business will outgrow quickly and then face both a base plan fee and per-device overage charges
  • Per-additional-device pricing on Essential ($2.00 each) is proportionally expensive for a team that grows just past the included count, since the jump from free to paid is immediate once the 11th device joins
  • Relay fallback, when a direct peer-to-peer path cannot be established (common behind certain NAT or firewall configurations), routes traffic through ZeroTier's infrastructure, adding latency and a dependency the buyer does not fully control
  • Enterprise and Quantum tiers are entirely custom-quoted, so very large deployments cannot be budgeted from the public pricing page
  • Network administration for larger deployments (Scale and above) still requires understanding ZeroTier's access control and network rule model, which has a real learning curve beyond simple device joining
  • As with any software-defined mesh network, security depends on correctly configured network authorization; a misconfigured network can expose devices more broadly than intended

Pricing, plan by plan

OpenWrt

Free
  • OpenWrtFree
    • No licence fee for any device count
    • All packages from the official feeds
    • Community support via forum and wiki

ZeroTier

Free
  • PersonalFree
    • 10 devices included
    • 1 network
  • Essential$18/month
    • 10 devices included
    • 10 networks
    • $2.00 per additional device/month
  • Scale$179/month
    • 100 devices included
    • Unlimited networks
    • $1.80 per additional device/month

Which should you pick?

Choose OpenWrt if

  • You need package manager.
  • You want to start without paying.
  • You work on Routers, Access points, x86-64, ARM, MIPS, Embedded gateways.
  • You also want luci web interface.
OpenWrt review

Choose ZeroTier if

  • You need peer-to-peer mesh networking.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, iOS, Android.
  • You also want free personal tier.
ZeroTier review

Questions people ask

Is OpenWrt or ZeroTier better?
Neither clearly leads. OpenWrt starts at Free and ZeroTier at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpenWrt or ZeroTier?
OpenWrt starts at Free and ZeroTier at Free.
Does OpenWrt or ZeroTier run on more platforms?
OpenWrt runs on Routers, Access points, x86-64, ARM, MIPS, Embedded gateways. ZeroTier runs on Windows, macOS, Linux, iOS, Android.
Can I use OpenWrt for free?
Both have a free tier, so you can try either at no cost before committing.
What is OpenWrt best used for?
OpenWrt is most often used for extending the useful life of an isp-supplied router that has stopped receiving security updates, separating guest, iot and work devices onto vlans on hardware that does not offer it natively, running wireguard, ad blocking or dns over tls at the edge rather than configuring every client, building small industrial or retail gateways where a full linux distribution is too heavy. Of those, extending the useful life of an isp-supplied router that has stopped receiving security updates and separating guest, iot and work devices onto vlans on hardware that does not offer it natively are not what ZeroTier is typically brought in for.
What can OpenWrt do that ZeroTier cannot?
OpenWrt covers Package manager, LuCI web interface, Traffic shaping, VPN and DNS. ZeroTier covers Peer-to-peer mesh networking, Free personal tier, Per-device overage pricing, Multiple networks.

Answered from the vendors’ own pages

OpenWrt: How do I know my router is supported?

Check the Table of Hardware for your exact model and revision before buying or flashing. Do not assume that a supported model number means a supported unit; manufacturers change chipsets within a model.

ZeroTier: Is ZeroTier free for personal use?

Yes, the Personal plan is free for up to 10 devices and 1 network.

OpenWrt: Is the OpenWrt One worth buying over a used router?

If you are evaluating OpenWrt rather than rescuing hardware you own, yes. It is supported by definition, has an unbrickable boot arrangement, and part of the price funds the project.

ZeroTier: How does overage pricing work?

Beyond a plan's included device count, additional devices are billed individually per month, at $2.00 each on Essential and $1.80 each on Scale.

OpenWrt: Will flashing void my warranty?

Almost always, and it may also break the ISP remote management your provider relies on for support. Keep the stock firmware image before you start.

ZeroTier: Is there a nonprofit or education discount?

Yes, registered charities and educational organisations receive up to 50% off.

OpenWrt: Is opkg still the package manager?

It is in the current stable releases, but development has moved towards apk, so expect package tooling and command syntax to change at the next major release.

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