Easy to set up bug tracking with Java
Automated tests with databases: prep, verify, restore tables
Open source Scrum tool and an ALM solution
Testing Framework for C and C++
Easy unit testing in node.js and the browser
Library of Approximate Adders
HTML5 Browser automation tool
A graphical, cross-browser, easy and Selenium-based testing tool
generic bits of useful code
Enterprise level performance test platform on The Grinder
Unified Test and Logging layer for multiple programming languages
Java (6&7) Code Coverage Plugin for NetBeans, based on JaCoCo
Quality-Check is a small Java library for basic runtime checks of vars
Java library can be used in JUnit testcases for beans coverage
Framework-level utilities on .NET Framework 4.0 (C#)
Mongo DB plugin for Benerator