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Testing · head to head

Katalon vs TestNG

Katalon logo

Katalon

Testing

Commercial low-code test automation platform built on Appium and Selenium, priced per seat plus separate cloud session add-ons

From
On request
Rated
-
Full reviewWebsite
TestNG logo

TestNG

Testing

Java testing framework created by Cedric Beust, still actively maintained but effectively a single-lead project

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only TestNG has a free tier, so it costs nothing to try first.
  • Each has a real cost: Katalon real cost stacks three separate charges, per-seat authoring licence, the True Platform add-on for test management, and per-session cloud execution, so the advertised seat price significantly understates total spend for a team running cloud tests regularly.; TestNG maintainership is concentrated around creator Cedric Beust rather than a broad team or foundation, which is a real continuity risk compared to JUnit's independent team or Jest's foundation backing.
  • They diverge on capability: Katalon covers Low-code test recording, TestNG covers Test dependencies.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Katalon and TestNG actually diverge.

Attributes where Katalon and TestNG differ
AttributeKatalonTestNG
Starting priceOn requestFree
Pricing modelPer seat per month, plus separate per-session cloud execution chargesOpen source, no licence fee
Free tierNoYes
PlatformsWeb, Windows, macOSLinux, macOS, Windows

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

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 Katalon

  • Low-code test recording
  • Built on Selenium and Appium
  • Object repository
  • AI-assisted test generation
  • TestCloud execution
  • TestOps management

Only in TestNG

  • Test dependencies
  • XML suite configuration
  • Native parallel execution
  • Data providers
  • Grouping
  • Flexible reporting

What people use each for

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

Katalon

  • A QA team wanting a lower-code authoring layer over Selenium and Appium for testers without deep coding backgroundsnot TestNG
  • An organisation wanting test management and AI-assisted test maintenance bundled with automation authoring in one commercial productnot TestNG
  • A team needing occasional cross-browser or device cloud sessions without maintaining its own device lab or Selenium Gridnot TestNG
  • An enterprise wanting a single vendor and support contract for test authoring, management and cloud execution togethernot TestNG

TestNG

  • A Java integration test suite that needs to skip dependent tests automatically when a prerequisite test failsnot Katalon
  • A team wanting XML-based suite configuration to manage large, grouped test suites without touching code for each runnot Katalon
  • A project needing native parallel test execution at the class or method level without adding a separate pluginnot Katalon
  • A Selenium-based UI test suite that uses TestNG as the underlying runner for grouping and parallelisationnot Katalon

Where each one falls short

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

Katalon

  • Real cost stacks three separate charges, per-seat authoring licence, the True Platform add-on for test management, and per-session cloud execution, so the advertised seat price significantly understates total spend for a team running cloud tests regularly.
  • Since it is built on Selenium and Appium underneath, a team with strong automation engineers can replicate most of the core capability for free, paying only for optional cloud execution elsewhere, making Katalon's value proposition mainly about authoring speed rather than unique capability.
  • The steep first-three-seats discount versus the fourth-seat-and-beyond price means cost per seat rises sharply as a team scales past three testers on Katalon Studio alone.
  • Low-code recorded tests can become brittle and hard to maintain at scale in the same way any record-and-playback approach does, requiring the team to still write real code for complex scenarios.
  • Enterprise pricing is quote-only, so the largest deployments lose the pricing transparency the published seat tiers otherwise offer.

TestNG

  • Maintainership is concentrated around creator Cedric Beust rather than a broad team or foundation, which is a real continuity risk compared to JUnit's independent team or Jest's foundation backing.
  • It is a smaller ecosystem than JUnit, so fewer third-party integrations, tutorials and Stack Overflow answers exist for edge cases.
  • XML-based suite configuration, while powerful, is an extra file and syntax to maintain alongside the codebase, which some teams find adds friction JUnit's more code-centric model avoids.
  • There is no commercial support tier or vendor relationship of any kind, unlike JUnit's OpenElements arrangement, so an enterprise wanting a support contract has no route to buy one.
  • Release cadence, while active, is slower and less frequent than JUnit 5's, since it depends on a much smaller pool of active maintainers.

Pricing, plan by plan

Katalon

On request
  • Katalon Studio$84/month
    • Annual billing, first three seats at 84 US dollars a seat a month
    • Fourth seat and beyond at 150 US dollars a seat a month
    • Low-code recording, object repository, Selenium and Appium engine underneath
  • True Automation$167/month
    • Annual billing, per seat
    • Includes Studio features plus test management and AI agents
    • True Platform TestOps and TestCloud sold as a further add-on at 700 US dollars a seat a year
  • Enterprise$undefined/year
    • Custom quote for private SaaS and hybrid licensing
    • Dedicated support
    • Negotiated cloud session volume

TestNG

Free
  • TestNGFree
    • Full functionality, no usage limits
    • Community support via GitHub
    • No commercial support tier exists

Which should you pick?

Choose Katalon if

  • You need low-code test recording.
  • You work on Web, Windows, macOS.
  • You also want built on selenium and appium.
Katalon review

Choose TestNG if

  • You need test dependencies.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want xml suite configuration.
TestNG review

Questions people ask

Is Katalon or TestNG better?
Neither clearly leads. Katalon starts at On request and TestNG at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Katalon or TestNG?
TestNG has a free tier; the other does not. Paid plans start at On request for Katalon and Free for TestNG.
Does Katalon or TestNG run on more platforms?
Katalon runs on Web, Windows, macOS. TestNG runs on Linux, macOS, Windows.
Can I use TestNG for free?
Yes. TestNG has a free tier, so you can try it without paying. Katalon starts at On request.
What is Katalon best used for?
Katalon is most often used for a qa team wanting a lower-code authoring layer over selenium and appium for testers without deep coding backgrounds, an organisation wanting test management and ai-assisted test maintenance bundled with automation authoring in one commercial product, a team needing occasional cross-browser or device cloud sessions without maintaining its own device lab or selenium grid, an enterprise wanting a single vendor and support contract for test authoring, management and cloud execution together. Of those, a qa team wanting a lower-code authoring layer over selenium and appium for testers without deep coding backgrounds and an organisation wanting test management and ai-assisted test maintenance bundled with automation authoring in one commercial product are not what TestNG is typically brought in for.
What can Katalon do that TestNG cannot?
Katalon covers Low-code test recording, Built on Selenium and Appium, Object repository, AI-assisted test generation. TestNG covers Test dependencies, XML suite configuration, Native parallel execution, Data providers.

Answered from the vendors’ own pages

Katalon: Is Katalon free?

No, though a 30-day free trial with no credit card is offered; the product is commercial with per-seat licensing.

TestNG: Is TestNG still actively maintained in 2026?

Yes, it continues to receive releases in its 7.x line with support for current Java versions, though maintenance is concentrated around a small team led by its creator.

Katalon: Does Katalon replace Selenium and Appium?

No, it is built on top of them; Katalon adds a low-code authoring layer, test management and cloud execution rather than a different automation engine.

TestNG: What does TestNG offer that JUnit does not?

Native test dependencies, XML-based suite configuration and built-in parallel execution without needing external plugins, all of which JUnit users typically add via separate libraries.

Katalon: Is cloud execution included in the seat price?

No, TestCloud cross-browser and mobile sessions are billed separately, at 197 US dollars a session monthly or 1,899 annually per session.

TestNG: Is there a commercial support option for TestNG?

No, unlike JUnit there is no commercial support arrangement; support is purely community-based through GitHub.

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