Hoppscotch is an open-source API development ecosystem that helps you create and test your API requests saving precious time in development.

Checks web UI for browser compatibility (Compliance with Can I Use?)

Gatling is a powerful open-source load testing solution that integrates with your development pipeline. It includes a web recorder and colorful reports.

GIPHY CAPTURE is the best way to create GIFs on your Mac. Simple, powerful, free, and easy enough for pretty much everyone and even a few small mammals.

A screenshot/screenvideo tool! Also allows you to do basic alterations to the screenshots (arrows, blur, ...)

Orderly Ape is an open source (MIT) tool to run distributed and scalable k6 load tests on your own infrastructure using k6, kubernetes, grafana and influxdb.