The Apache JMeter™ application is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.

Simple animated GIF screen recorder with an easy to use interface.

API Testing Platform that automatically generates unit test cases with dependency mocks from API calls

Easy on-device screenshot testing for Android.

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.

Mockoon is the easiest and quickest way to design and run mock REST APIs.