WebdriverIO vs Katalon Studio

Free and open source

From $84 per seat/month (Professional, billed annually; $184 month-to-month)

Free and open source. You pay in engineering time and CI minutes.

The seat price is only part of it: CI execution needs add-ons priced separately — Runtime Engine at $145/licence/month and cross-browser or mobile device sessions at $158/session/month — so a parallel CI setup costs several times the headline seat figure.

Everything, self-hosted

Free plan covers local authoring and execution for web, mobile and API.

Widely used

OpenJS Foundation · since 2015

Widely used

Katalon, Inc. · since 2016

• One API for web and native mobile, which is rare and genuinely useful if you ship both.
• Vendor-neutral: swap between local, grid and any device cloud by changing config.
• Mature plugin ecosystem for reporting, visual testing and accessibility.

• One tool spanning web, API, mobile and desktop, which avoids stitching four frameworks together.
• Manual testers become productive in days rather than months.
• Built-in reporting and test management reduce the number of separate purchases.

• Configuration-heavy compared to Playwright; the wdio.conf.js file becomes a project of its own.
• Inherits WebDriver's flakiness characteristics when used in WebDriver mode.
• Smaller community than Playwright or Cypress, so obscure problems take longer to solve.

• Record-and-playback suites become brittle at scale unless someone refactors them into keywords and objects.
• Proprietary project format makes migrating away expensive — real lock-in.
• Heavy desktop IDE; version control and code review are awkward compared to plain-text tests.

JavaScript teams that need one framework covering both web and native mobile.

QA teams without dedicated automation engineers that need coverage across several platforms.