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Selenium IDE vs Katalon Studio: catalog facts
Selenium IDE	Katalon Studio
Free Free and open source.	Freemium Free to start without a credit card, with paid plans and enterprise capabilities.
Browser extension, Command line	Windows, macOS, Linux
Record and playback with no setup beyond the extension Multiple locators per element for more resilient tests	Web, mobile, API and desktop testing in one tool No-code, low-code and full-code test authoring
Recorded tests can need manual editing as sites change Limited to web applications	Proprietary, with key features tied to paid plans Much of the platform is aimed at enterprise QA teams
Browser extension	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.