C/C++test is the fully integrated software testing solution for embedded safety-critical industries.

NUnit is a unit-testing framework for all .Net languages.

FlaUI enables reliable end‑to‑end UI automation for Windows applications, offering a clean .NET interface over Microsoft’s UI Automation APIs (UIA2/UIA3) to test Win32, WinForms, WPF, and UWP apps.

Professional software tool for HTTP testing and debugging

An open source Ruby library for automating tests.

SelectorsHub is the Next Gen XPath Plugin & Selectors tool. It supports all kinds of XPath, locators, shadow dom, iframe, svg, dynamic elements, multi selectors generation and xpath error handling. It is a Free community product.