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Networking · head to head

PRTG Network Monitor vs Tailscale

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
Tailscale logo

Tailscale

Networking

Zero-trust mesh VPN built on WireGuard with identity-based access

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tailscale has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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; Tailscale requires active configuration and management; cannot be deployed passively like consumer VPNs
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where PRTG Network Monitor and Tailscale differ
AttributePRTG Network MonitorTailscale
Starting priceOn requestFree
Pricing modelPer sensor tier, billed monthly on an annual contractfreemium
Free tierNoYes
PlatformsWindows, Web, iOS, AndroidLinux, macOS, Windows, iOS, Android, API, Web

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 PRTG Network Monitor

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

Only in Tailscale

Nothing recorded that PRTG Network Monitor does not also cover.

What people use each for

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

PRTG Network Monitor

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

Tailscale

  • Remote team access to internal services without VPN concentratorsnot PRTG Network Monitor
  • Hybrid cloud connectivity across AWS, Azure, GCP, and on-premises networksnot PRTG Network Monitor
  • CI/CD pipeline access to internal infrastructure (databases, Kubernetes clusters)not PRTG Network Monitor
  • Zero-trust access to SSH, Kubernetes, and databases without bastion hostsnot PRTG Network Monitor
  • Mobile and IoT device management in enterprise environmentsnot PRTG Network Monitor
  • Temporary contractor and third-party access controlnot PRTG Network Monitor

Where each one falls short

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

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

Tailscale

  • Requires active configuration and management; cannot be deployed passively like consumer VPNs
  • Device posture policies and JIT access tiers are locked behind Premium subscription (£18/month), raising per-user costs for enterprises
  • Limited support for legacy protocols and non-modern operating systems (Windows 7, older Android versions)
  • Centralised control plane operated by Tailscale (hosted in US); no self-hosted control plane option for air-gapped or sovereign deployments
  • Cannot replace full VPN functionality for accessing legacy IP-based services; only applicable to modern infrastructure

Pricing, plan by plan

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

Tailscale

Free
  • PersonalFree
    • Up to 6 users
    • Unlimited devices per user
    • 1,000 ephemeral resource minutes per month
  • Standard$8/month
    • Unlimited users
    • Unlimited devices
    • 1,000 ephemeral resource minutes per month
  • Premium$18/month
    • Unlimited users and devices
    • 10,000 ephemeral resource minutes per month
    • 300 ACL groups
  • EnterpriseFree
    • Custom pricing
    • Unlimited resources
    • Advanced security features

Which should you pick?

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

Choose Tailscale if

  • You want to start without paying.
  • You work on Linux, macOS, Windows, iOS, Android, API, Web.
Tailscale review

Questions people ask

Is PRTG Network Monitor or Tailscale better?
Neither clearly leads. PRTG Network Monitor starts at On request and Tailscale at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PRTG Network Monitor or Tailscale?
Tailscale has a free tier; the other does not. Paid plans start at On request for PRTG Network Monitor and Free for Tailscale.
Does PRTG Network Monitor or Tailscale run on more platforms?
PRTG Network Monitor runs on Windows, Web, iOS, Android. Tailscale runs on Linux, macOS, Windows, iOS, Android, API, Web.
Can I use Tailscale for free?
Yes. Tailscale has a free tier, so you can try it without paying. PRTG Network Monitor starts at On request.
What is PRTG Network Monitor best used for?
PRTG Network Monitor is most often used for an it team wanting network, server and application monitoring in one product rather than assembling separate open source tools, an organisation that wants a windows-installable on-premises monitoring server with a polished ui out of the box, a team sizing a monitoring purchase that needs to calculate sensor density per device carefully before committing to a tier, a company wanting hybrid on-premises and cloud monitoring from the same licence and dashboard. Of those, an it team wanting network, server and application monitoring in one product rather than assembling separate open source tools and an organisation that wants a windows-installable on-premises monitoring server with a polished ui out of the box are not what Tailscale is typically brought in for.
What can PRTG Network Monitor do that Tailscale cannot?
PRTG Network Monitor covers Sensor-based monitoring, Auto-discovery, Multiple monitoring technologies, Maps and dashboards.

Answered from the vendors’ own pages

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.

Tailscale: Is Tailscale free?

Tailscale Personal tier is free forever for up to 6 users. Standard (£8/month per user) adds team features, Premium (£18/month per user) adds security controls, and Enterprise tiers are custom priced.

Source
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.

Tailscale: Does Tailscale route all traffic through a central gateway?

No. Tailscale creates direct encrypted connections between devices using WireGuard. It only proxies traffic when direct peer connections are not possible (some restrictive NAT scenarios). This reduces latency and eliminates VPN gateway bottlenecks.

Source
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.

Tailscale: Can I host Tailscale on-premises?

No. Tailscale provides a hosted control plane only. For fully self-hosted mesh networking, consider WireGuard with manual key management or Netmaker. Tailscale Enterprise can provide custom deployments for specific requirements.

Source
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