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SpeedCurve vs WebPageTest: catalog facts
SpeedCurve	WebPageTest
Paid Commercial subscription service; demos are offered on request.	Freemium Basic tests are free, with paid options available.
Web	Web
Synthetic testing and real user monitoring in one place Tracks Core Web Vitals and custom timings over time	Detailed request waterfall and filmstrip view Tests from multiple locations
Paid service aimed at businesses More than an individual needs for occasional checks	Output is detailed and assumes some performance knowledge Some features sit behind paid plans
Hosted service	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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