The OWASP ZAP core project
SoapUI is a free and open source cross-platform functional testing
Now continued as OculiX — see oculix.org
Enterprise integration testing framework
Easy to set up bug tracking with Java
Load testing tool for analyzing and measuring performance of services
Test Automation framework intended for coarse-grained testing
A C++ library for AVR and NodeMCU
Benchmarking tool
Software Unit Tests (Language Independent Approach)
USB Bridge for SMBus/I2C, GPIO, & Clock
A JDBC proxy driver for the recording and replay of database access
Java-based test automation framework (Maven + TestNG)
Test Automation Management Tool
Translate files between XLS / XLSX and XML format . . .
Marathon supports testing of Java/Swing and Java/Fx applications.
Mock service for SOAP/REST webservices to support automated tests.
Yet Another Elasticsearch GUI Client
PyUnit and PyDev extensions for arbitrary Executables
Filler Studio for any kind of automation for Windows,Linux,Mac.
Sahi is a web automation testing tool focused on testers