NUnit 3 Framework
Now continued as OculiX — see oculix.org
Scalable open source load testing tool
Thou Shalt Write Tests in Go
State of the art mutation testing system for the JVM
SoapUI is a free and open source cross-platform functional testing
A modern, C++-native, test framework for unit-tests, TDD and BDD
Cucumber for Ruby
Go library that makes it easier to write automated tests
Testing for Developers. Toolkit that creates test-cases and data mocks
Find vulnerabilities, misconfigurations, secrets, SBOM in containers
Delightful JavaScript Testing
Development tools and libraries specialized for Angular
PerfView is a CPU and memory performance-analysis tool
OS-agnostic, system-level binary package manager
Formatted output of timed sections in Julia
Image loading system
Supports tests, providing lightweight, throwaway instances of database
Fast, easy and reliable testing for anything that runs in a browser
A Coverage-Guided, Native Python Fuzzer
The most advanced tool for HTTP API
Test automation made simple
A JavaScript Testing Framework
Most popular Mocking framework for unit tests written in Java
Headless Chromium-based web performance metrics collector