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

QA Sphere is an all-in-one test management tool for manual and automated testing. It offers features like test case management, issue tracking, and test planning, helping teams streamline testing processes and ensure software quality.

All-in-one test management solution for both manual and automated software testing

YEST is a visual-based tool for designing and automating functional tests. It implements a shift-left approach where functional knowledge is documented through visual representations and may be shared in Jira. In short, YEST is the tester’s IDE.

Professional software tool for HTTP testing and debugging

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.