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Loader.io vs Vegeta: catalog facts
Loader.io	Vegeta
Freemium Free load testing service with paid plans listed on its pricing page.	Free Free and open source.
Web	Windows, macOS, Linux, Command line
No load generation infrastructure to run yourself Real-time monitoring of each test	Constant request rate for predictable load Composable subcommands for attack, report and plot
Requires an account and registering your target host Closed source hosted service	Command line only No built-in scripting for complex user flows
Hosted service	Downloadable app
Closed source	Open source
License not stated	License: MIT
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 24, 2026

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