k6

Open-source, developer-centric load testing tool for HTTP, WebSockets, gRPC and more.

Desktopfreemium

k6 is an open-source load-testing tool that lets developers write performance tests as JavaScript code and run them from the command line, in CI pipelines, or across a Kubernetes cluster. It supports HTTP, WebSockets, gRPC and browser-based testing, with flexible metrics export and native integration with Grafana Cloud. It's built for developers and QA teams who want load tests they can version-control and automate rather than build through a GUI.

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