Compare software

wrk vs loadtest: catalog facts
wrk	loadtest
Free Free to use under the project’s modified Apache license.	Free Free and open source under the MIT license.
Command line	Command line
Generates substantial load from a single multicore CPU Supports custom LuaJIT scripts	Tests HTTP and WebSocket URLs Can be integrated into automated tests through its API
Requires command-line use High connection counts require enough available ephemeral ports	Focused on load testing selected URLs
Downloadable app	Downloadable app
Not stated if open source	Open source
License: Modified Apache 2.0 License, Version 2.0.1	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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