Now continued as OculiX — see oculix.org
State of the art mutation testing system for the JVM
SoapUI is a free and open source cross-platform functional testing
Scalable open source load testing tool
Development tools and libraries specialized for Angular
Go library that makes it easier to write automated tests
Formatted output of timed sections in Julia
Test Runner for JavaScript
Automatically mock your HTTP interactions to simplify testing
PerfView is a CPU and memory performance-analysis tool
Delightful JavaScript Testing
OS-agnostic, system-level binary package manager
Find vulnerabilities, misconfigurations, secrets, SBOM in containers
Supports tests, providing lightweight, throwaway instances of database
Cucumber for Ruby
Thou Shalt Write Tests in Go
A Coverage-Guided, Native Python Fuzzer
The most advanced tool for HTTP API
Testing for Developers. Toolkit that creates test-cases and data mocks
A modern, C++-native, test framework for unit-tests, TDD and BDD
Install and run Python applications in isolated environments
NUnit 3 Framework
Fast, easy and reliable testing for anything that runs in a browser
Super-agent driven library for testing node.js HTTP servers
Interactive evaluation for Neovim