Easy to set up bug tracking with Java
A trivial TCP/UDP connectivity tester
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
C / C++ everything-memory debugger
Library of Approximate Adders
Eclipse Plug-in for Automatic Refactoring of Fit Tests.
HTML5 Browser automation tool
(PEST)
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