Playwright vs Katalon Studio

Free and open source

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

Free and open source. Microsoft also sells a hosted parallel-runner service; the library itself has no paid tier.

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.

Category standard

Microsoft · since 2020

Widely used

Katalon, Inc. · since 2016

• Auto-waiting and web-first assertions remove most of the sleep() flake that plagues older tools.
• The trace viewer — DOM snapshots, network, console and screenshots per step — is the best failure triage in the category.
• True WebKit support, so Safari bugs are caught on Linux CI without a Mac.

• 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.

• No native mobile app support. Mobile means an emulated viewport, not a real device.
• The API surface is large; teams without a conventions document end up with four ways to write the same locator.
• Component testing is still experimental compared to the E2E runner.

• 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.

Teams that write their own tests and want the lowest-flake open-source option available.

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