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

Automation Test Reporting. OSS, Language & Framework agnostic

k6 Open Source is designed for load testing. Extensible to support other types of testing.

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.

SeleniumBase Case Plans is Test Case Management Software that uses Markdown tables for displaying test plans directly in GitHub (and other source code management systems that support Markdown format).