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Siege vs Locust: catalog facts
Siege	Locust
Free Free and open source.	Free Free and open source; paid support is available separately from Locust.cloud.
macOS, Linux, Command line	Windows, macOS, Linux, Command line
Tests many URLs at once from a list Configurable number of simulated users	Test scenarios written as ordinary Python code Distributed runs across multiple machines
Command line only, with no graphical reports Scripting options are simpler than in newer load testers	Requires writing Python to define tests Documentation is focused mainly on HTTP testing
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	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.