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Networking · head to head

Headscale vs PRTG Network Monitor

Headscale logo

Headscale

Networking

Open source reimplementation of the Tailscale coordination server for a single organisation

From
Free
Rated
-
Full reviewWebsite
PRTG Network Monitor logo

PRTG Network Monitor

Networking

Infrastructure monitoring licensed by sensor count, not by device, which changes what a licence actually covers

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Headscale has a free tier, so it costs nothing to try first.
  • Each has a real cost: Headscale the clients are proprietary software maintained by a company with no obligation to Headscale, so a client update can change protocol behaviour and break your control server until volunteers catch up.; PRTG Network Monitor licensing by sensor rather than device means the real cost per device is unpredictable until sensor density is measured; a small network of complex devices can need a much larger tier than device count alone suggests
  • They diverge on capability: Headscale covers Self hosted control server, PRTG Network Monitor covers Sensor-based monitoring.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Headscale and PRTG Network Monitor actually diverge.

Attributes where Headscale and PRTG Network Monitor differ
AttributeHeadscalePRTG Network Monitor
Starting priceFreeOn request
Pricing modelOpen source, no licence feePer sensor tier, billed monthly on an annual contract
Free tierYesNo
PlatformsLinux, DockerWindows, Web, iOS, Android

Identical on both: user rating (Not yet rated), category (Networking).

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 Headscale

  • Self hosted control server
  • Access control policies
  • User separation
  • Pre-authentication keys
  • Subnet routers and exit nodes
  • Own or shared DERP

Only in PRTG Network Monitor

  • Sensor-based monitoring
  • Auto-discovery
  • Multiple monitoring technologies
  • Maps and dashboards
  • Cloud and hybrid deployment

What people use each for

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

Headscale

  • Running a mesh network where no third party may hold the device registrynot PRTG Network Monitor
  • A homelab or personal fleet where paying per user for a hosted control plane is not worth itnot PRTG Network Monitor
  • Air gapped or restricted environments that cannot reach an external coordination servicenot PRTG Network Monitor
  • Keeping the Tailscale client experience while removing the vendor from the trust pathnot PRTG Network Monitor

PRTG Network Monitor

  • An IT team wanting network, server and application monitoring in one product rather than assembling separate open source toolsnot Headscale
  • An organisation that wants a Windows-installable on-premises monitoring server with a polished UI out of the boxnot Headscale
  • A team sizing a monitoring purchase that needs to calculate sensor density per device carefully before committing to a tiernot Headscale
  • A company wanting hybrid on-premises and cloud monitoring from the same licence and dashboardnot Headscale

Where each one falls short

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

Headscale

  • The clients are proprietary software maintained by a company with no obligation to Headscale, so a client update can change protocol behaviour and break your control server until volunteers catch up.
  • Features that live on the vendor side, including the admin console, Funnel and app connectors, do not exist here and cannot be added, so feature comparisons against Tailscale are misleading.
  • There is no official web interface, so day to day administration is a command line tool or one of several unofficial front ends of varying quality and maintenance.
  • It is deliberately single tenant, so a managed service provider cannot use one deployment to serve several customer networks.
  • Upgrades have required database migrations and policy format changes between releases, and with no support contract a failed migration on the control server is your problem alone.

PRTG Network Monitor

  • Licensing by sensor rather than device means the real cost per device is unpredictable until sensor density is measured; a small network of complex devices can need a much larger tier than device count alone suggests
  • Different PRTG licence sizes cannot be combined on one server, so outgrowing a tier means a step change to the next tier rather than a smooth incremental add
  • It requires a Windows server for on-premises deployment, which is an added infrastructure and patching burden compared with a Linux-native open source alternative
  • Pricing is materially higher than open source options like Icinga or LibreNMS for comparable core monitoring capability, and the premium is for polish and support rather than unique functionality
  • The free tier (100 sensors) is limited enough that most real deployments quickly need a paid tier, so it functions more as a trial than a genuinely usable free offering
  • Custom sensor scripting and advanced configuration still require real monitoring expertise; the polished UI does not remove the underlying complexity of correctly instrumenting a large network

Pricing, plan by plan

Headscale

Free
  • HeadscaleFree
    • Full functionality, no node limit
    • Official Tailscale clients on every platform
    • No vendor account required

PRTG Network Monitor

On request
  • PRTG 500$200/month
    • Up to 500 sensors
  • PRTG 1000$358/month
    • Up to 1,000 sensors
  • PRTG 2500$742/month
    • Up to 2,500 sensors
  • PRTG 5000$1300/month
    • Up to 5,000 sensors

Which should you pick?

Choose Headscale if

  • You need self hosted control server.
  • You want to start without paying.
  • You work on Linux, Docker.
  • You also want access control policies.
Headscale review

Choose PRTG Network Monitor if

  • You need sensor-based monitoring.
  • You work on Windows, Web, iOS, Android.
  • You also want auto-discovery.
PRTG Network Monitor review

Questions people ask

Is Headscale or PRTG Network Monitor better?
Neither clearly leads. Headscale starts at Free and PRTG Network Monitor at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Headscale or PRTG Network Monitor?
Headscale has a free tier; the other does not. Paid plans start at Free for Headscale and On request for PRTG Network Monitor.
Does Headscale or PRTG Network Monitor run on more platforms?
Headscale runs on Linux, Docker. PRTG Network Monitor runs on Windows, Web, iOS, Android.
Can I use Headscale for free?
Yes. Headscale has a free tier, so you can try it without paying. PRTG Network Monitor starts at On request.
What is Headscale best used for?
Headscale is most often used for running a mesh network where no third party may hold the device registry, a homelab or personal fleet where paying per user for a hosted control plane is not worth it, air gapped or restricted environments that cannot reach an external coordination service, keeping the tailscale client experience while removing the vendor from the trust path. Of those, running a mesh network where no third party may hold the device registry and a homelab or personal fleet where paying per user for a hosted control plane is not worth it are not what PRTG Network Monitor is typically brought in for.
What can Headscale do that PRTG Network Monitor cannot?
Headscale covers Self hosted control server, Access control policies, User separation, Pre-authentication keys. PRTG Network Monitor covers Sensor-based monitoring, Auto-discovery, Multiple monitoring technologies, Maps and dashboards.

Answered from the vendors’ own pages

Headscale: Is Headscale made by Tailscale?

No. It is an independent community project. Tailscale acknowledges it but does not support it, and the clients it relies on are the vendor ones.

PRTG Network Monitor: Is PRTG licensed per device or per sensor?

Per sensor. Each individually monitored metric counts as one sensor, so a single device is typically several sensors.

Headscale: What do I lose compared with the hosted service?

The admin console, the vendor relay network unless you use the public DERP servers, and hosted only features such as Funnel and app connectors.

PRTG Network Monitor: Can I combine two PRTG licence tiers on one server?

No, Paessler states different license sizes cannot be combined on one PRTG installation.

Headscale: Can I still use the public relay servers?

Yes, the default configuration can use them, though many self hosters run their own DERP to remove that dependency.

PRTG Network Monitor: Is there a free tier?

Yes, PRTG offers a free tier limited to 100 sensors, which most production networks will exceed quickly.

Headscale: Is it suitable for a company network?

For a technical team, yes. There is no vendor to escalate to, so it needs someone on staff who is willing to own the control server.

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