Softwr

Networking · head to head

Icinga vs OpenWrt

Icinga logo

Icinga

Networking

Open source infrastructure monitoring, free at its core, with paid support and modules sold separately by Icinga GmbH

From
Free
Rated
-
Full reviewWebsite
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

The short version

  • Each has a real cost: Icinga the free core has no vendor SLA, so production incidents are supported through community channels unless a paid support subscription is purchased; 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.
  • They diverge on capability: Icinga covers Forever Free core, OpenWrt covers Package manager.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Icinga and OpenWrt actually diverge.

Attributes where Icinga and OpenWrt differ
AttributeIcingaOpenWrt
Pricing modelOpen source core, with paid repository, module and support subscriptions sold separatelyOpen source, no licence fee
PlatformsLinux, WebRouters, Access points, x86-64, ARM, MIPS, Embedded gateways
CategoryNetworkingOperating Systems

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 Icinga

  • Forever Free core
  • Clustering and HA
  • Icinga Web and API
  • Enterprise modules (paid)
  • Integration ecosystem

Only in OpenWrt

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

What people use each for

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

Icinga

  • An IT team wanting unlimited-scale open source monitoring with no per-host licence fee, running standard Linux distributionsnot OpenWrt
  • An organisation on RHEL or SLES that wants officially packaged Icinga builds via the repository subscription rather than building from sourcenot OpenWrt
  • A team wanting an SLA-backed vendor support relationship rather than relying on community forums for a production monitoring systemnot OpenWrt
  • A company already invested in Prometheus and Grafana wanting to add host and service-level alerting from a compatible open source toolnot OpenWrt

OpenWrt

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

Where each one falls short

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

Icinga

  • The free core has no vendor SLA, so production incidents are supported through community channels unless a paid support subscription is purchased
  • Repository access for enterprise Linux distributions like RHEL and SLES is not free, so organisations standardised on those distributions face a real recurring cost most open source monitoring buyers do not expect
  • Enterprise modules are gated behind a separate module subscription, so some functionality demonstrated in marketing material is not part of the free core
  • Self-hosting and operating Icinga requires real Linux and monitoring expertise that a commercial SaaS tool would otherwise absorb, so total cost of ownership includes staff time not captured in the licence price
  • Pricing for the paid subscriptions varies by geographic region and is not published as a single global rate card, complicating budgeting for multinational organisations
  • The web interface and configuration language, while capable, are less immediately polished than a fully commercial tool like PRTG, and initial setup takes longer to reach a usable state

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.

Pricing, plan by plan

Icinga

Free
  • IcingaFree
    • Unlimited hosts and services
    • Clustering and API
    • Community support
  • Support Subscription$undefined/year
    • Professional support (8x5 or 24/7)
    • Includes module and repository subscriptions

OpenWrt

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

Which should you pick?

Choose Icinga if

  • You need forever free core.
  • You want to start without paying.
  • You work on Linux, Web.
  • You also want clustering and ha.
Icinga review

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

Questions people ask

Is Icinga or OpenWrt better?
Neither clearly leads. Icinga starts at Free and OpenWrt at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Icinga or OpenWrt?
Icinga starts at Free and OpenWrt at Free.
Does Icinga or OpenWrt run on more platforms?
Icinga runs on Linux, Web. OpenWrt runs on Routers, Access points, x86-64, ARM, MIPS, Embedded gateways.
Can I use Icinga for free?
Both have a free tier, so you can try either at no cost before committing.
What is Icinga best used for?
Icinga is most often used for an it team wanting unlimited-scale open source monitoring with no per-host licence fee, running standard linux distributions, an organisation on rhel or sles that wants officially packaged icinga builds via the repository subscription rather than building from source, a team wanting an sla-backed vendor support relationship rather than relying on community forums for a production monitoring system, a company already invested in prometheus and grafana wanting to add host and service-level alerting from a compatible open source tool. Of those, an it team wanting unlimited-scale open source monitoring with no per-host licence fee, running standard linux distributions and an organisation on rhel or sles that wants officially packaged icinga builds via the repository subscription rather than building from source are not what OpenWrt is typically brought in for.
What can Icinga do that OpenWrt cannot?
Icinga covers Forever Free core, Clustering and HA, Icinga Web and API, Enterprise modules (paid). OpenWrt covers Package manager, LuCI web interface, Traffic shaping, VPN and DNS.

Answered from the vendors’ own pages

Icinga: Is Icinga free to run in production?

Yes, the core platform has no licence fee and no limit on hosts or services monitored.

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.

Icinga: What do the paid subscriptions actually add?

A repository subscription provides packages for certain enterprise Linux distributions, a module subscription unlocks enterprise-only add-on modules, and a support subscription bundles both with professional support.

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.

Icinga: Is Icinga related to Nagios?

Yes, it originated as a fork of Nagios but has since diverged into an independently developed platform.

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.

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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