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WebPageTest vs SpeedCurve: catalog facts
WebPageTest	SpeedCurve
Freemium Basic tests are free, with paid options available.	Paid Commercial subscription service; demos are offered on request.
Web	Web
Detailed request waterfall and filmstrip view Tests from multiple locations	Synthetic testing and real user monitoring in one place Tracks Core Web Vitals and custom timings over time
Output is detailed and assumes some performance knowledge Some features sit behind paid plans	Paid service aimed at businesses More than an individual needs for occasional checks
Web application	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Needs internet	Needs internet
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.