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

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).

Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid

Tether is a bug reporting tool for teams. With Tether, teams can report bugs directly on any website using our screenshot and recording tools. Teams can manage feedback from their Tether dashboard or push the feedback anywhere via our integrations.

Unifying API testing, API Performance testing, API Mocks and UI testing.

Bird makes bug reporting 50% faster. Record your screen and our browser extension will automatically capture all the relevant data for you (steps to reproduce, system info, console logs, etc.).