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Technology · head to head

Checkmk vs ESLint

Checkmk logo

Checkmk

Technology

Comprehensive IT monitoring, open and flexible

From
Free
Free plan
Yes
Full reviewWebsite
ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Checkmk pricing calculated by service count, not hosts (approximately 30 services per host on average); ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Checkmk and ESLint actually diverge.

Attributes where Checkmk and ESLint differ
AttributeCheckmkESLint
Pricing modelsubscriptionUnknown
PlatformsWebBrowser-based JavaScript, Node.js, Any JavaScript environment
CategoryTechnologyDeveloper Tools
FoundedUnknown2019

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

What people use each for

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

Checkmk

  • Infrastructure monitoringnot ESLint
  • System observabilitynot ESLint
  • Enterprise compliance monitoringnot ESLint

ESLint

  • Statically analysing JavaScript and JSX to find problems before runtimenot Checkmk
  • Automatically fixing issues with syntax-aware rewritesnot Checkmk
  • Enforcing a consistent code style across a teamnot Checkmk
  • Running as a CI step to block non-conforming codenot Checkmk
  • Writing custom rules for project-specific conventionsnot Checkmk

Where each one falls short

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

Checkmk

  • Pricing calculated by service count, not hosts (approximately 30 services per host on average)
  • Professional support limited to 8-10 hours per week on base plans
  • Synthetic monitoring is separate add-on with per-test pricing

ESLint

  • Slow performance on large codebases compared to newer tools like Oxlint and Biome
  • Complexity in configuration from scratch, particularly for TypeScript support
  • Limited built-in TypeScript support, requiring separate parsers and coordination with new TypeScript features

Pricing, plan by plan

Checkmk

Free
  • Community (Self-Hosted)Free
    • No cost, forever
    • Up to ~100 hosts
    • Basic infrastructure monitoring
  • Pro (Self-Hosted)$190/month
    • Advanced analytics
    • Reporting
    • Distributed monitoring
  • Ultimate (Self-Hosted)$275/month
    • Full-stack observability
    • Advanced security compliance
    • 10 hours x 5 days professional support (upgradable to 24/7)
  • CloudAI (SaaS)$240/month
    • Fully managed cloud hosting
    • 99.5% uptime SLA
    • Supports up to 50000 services

ESLint

Free

No published plan breakdown. See the ESLint review.

Which should you pick?

Choose Checkmk if

  • You want to start without paying.
Checkmk review

Choose ESLint if

  • You want to start without paying.
  • You work on Browser-based JavaScript, Node.js, Any JavaScript environment.
ESLint review

Questions people ask

Is Checkmk or ESLint better?
Neither clearly leads. Checkmk starts at Free and ESLint at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Checkmk or ESLint?
Checkmk starts at Free and ESLint at Free.
Does Checkmk or ESLint run on more platforms?
Checkmk runs on Web. ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment.
Can I use Checkmk for free?
Both have a free tier, so you can try either at no cost before committing.
What is Checkmk best used for?
Checkmk is most often used for infrastructure monitoring, system observability, enterprise compliance monitoring. Of those, infrastructure monitoring and system observability are not what ESLint is typically brought in for.

Answered from the vendors’ own pages

Checkmk: Is there a free version of Checkmk?

Yes, Checkmk Community edition is free forever and supports up to approximately 100 hosts for basic infrastructure monitoring with no cost.

Source
ESLint: Does ESLint automatically fix code issues?

Many problems ESLint finds can be automatically fixed via the --fix flag. ESLint fixes are syntax-aware so you won't experience errors introduced by traditional find-and-replace algorithms.

Source
Checkmk: How does Checkmk calculate pricing by host count?

Checkmk uses service-based pricing where each monitored aspect (file system, hardware sensor, switch port, metric) counts as one service. On average, there are approximately 30 services per host.

Source
ESLint: How much does ESLint cost?

ESLint is completely free and open-source software maintained by the OpenJS Foundation. The project accepts voluntary donations from sponsors.

Source
Checkmk: What is the difference between Checkmk Pro and Ultimate tiers?

Pro tier at 190 EUR/month includes advanced analytics and 8x5 support, while Ultimate at 275 EUR/month adds full-stack observability, advanced compliance features, and upgradable 24/7 support.

Source
ESLint: Can I write custom ESLint rules?

Yes. You can develop custom rules that work alongside built-in functionality through ESLint's plugin system, allowing complete customization for your project needs.

Source
Checkmk: Does Checkmk offer a managed SaaS option?

Yes, Checkmk CloudAI is a fully managed SaaS tier at 240 EUR/month with 99.5% uptime SLA and support for up to 50000 services.

Source
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