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