YATTIE exists to help make tester's lives easier. Ideally, it should remove friction from the exploratory testing process - everywhere from gathering evidence to submitting reports.

WebLOAD – Performance and Load Testing for the Most Challenging Web Applications

Screenshot testing library 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.

Realistic performance testing with unrivaled reporting. Develop locally, scale globally, and retain full access to all your data. 100% Open Source.

Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).