Testing · head to head
Katalon vs Selenium
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
- -
Selenium
Testing
Browser automation framework and the W3C WebDriver standard
- From
- Free
- Rated
- -
The short version
- Only Selenium 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.; Selenium flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
- They diverge on capability: Katalon covers Low-code test recording, Selenium covers W3C WebDriver.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Katalon and Selenium actually diverge.
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 Selenium
- W3C WebDriver
- Many language bindings
- Selenium Grid
- Broad browser support
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 Selenium
- An organisation wanting test management and AI-assisted test maintenance bundled with automation authoring in one commercial productnot Selenium
- A team needing occasional cross-browser or device cloud sessions without maintaining its own device lab or Selenium Gridnot Selenium
- An enterprise wanting a single vendor and support contract for test authoring, management and cloud execution togethernot Selenium
Selenium
- Cross-browser testing where Safari and legacy browsers must be coverednot Katalon
- Teams whose test suites are written in Java or C# rather than JavaScriptnot Katalon
- Distributing a large suite across a grid of machinesnot 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.
Selenium
- Flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
- Setup involves drivers, versions and grid infrastructure that Playwright and Cypress bundle away
- Slower to run than tools that talk to browsers over a debugging protocol rather than WebDriver
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
Selenium
Free- SeleniumFree
- Full functionality
- Unlimited tests
- Community support
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.
Choose Selenium if
- You need w3c webdriver.
- You want to start without paying.
- You work on Linux, macOS, Windows, Web.
- You also want many language bindings.
Questions people ask
- Is Katalon or Selenium better?
- Neither clearly leads. Katalon starts at On request and Selenium at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Katalon or Selenium?
- Selenium has a free tier; the other does not. Paid plans start at On request for Katalon and Free for Selenium.
- Does Katalon or Selenium run on more platforms?
- Katalon runs on Web, Windows, macOS. Selenium runs on Linux, macOS, Windows, Web.
- Can I use Selenium for free?
- Yes. Selenium 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 Selenium is typically brought in for.
- What can Katalon do that Selenium cannot?
- Katalon covers Low-code test recording, Built on Selenium and Appium, Object repository, AI-assisted test generation. Selenium covers W3C WebDriver, Many language bindings, Selenium Grid, Broad browser support.
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.
Selenium: Is Selenium free?
Yes, open source with no licence fee. Paid costs come from grid infrastructure or services like BrowserStack.
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.
Selenium: Selenium or Playwright?
Playwright handles waiting automatically and is faster to set up, which removes most flakiness complaints. Selenium wins on language breadth, browser coverage including Safari, and existing suites you already have.
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.
Selenium: Is Selenium still relevant?
Yes. Its WebDriver protocol is a W3C standard implemented by every major browser, and very large existing suites are not rewritten cheaply.
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