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Loader.io vs Locust: catalog facts
Loader.io	Locust
Freemium Free load testing service with paid plans listed on its pricing page.	Free Free and open source; paid support is available separately from Locust.cloud.
Web	Windows, macOS, Linux, Command line
No load generation infrastructure to run yourself Real-time monitoring of each test	Test scenarios written as ordinary Python code Distributed runs across multiple machines
Requires an account and registering your target host Closed source hosted service	Requires writing Python to define tests Documentation is focused mainly on HTTP testing
Hosted service	Downloadable app
Closed source	Open source
License not stated	License not stated
Account needed	No account needed
Needs internet	Works offline
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.