VectorCAST/Ada is an integrated software test solution that significantly reduces the time, effort, and cost associated with testing Ada software components necessary for validating safety- and mission-critical embedded systems.

Voodoo-Mock is a framework for `mock objects' based unit testing in C++. Written in perl, Voodoo-Mock parses C++ code, and generates redirection and mock classes. Voodoo-Mock can be used with test suite frameworks such as CXXTest or CPPUnit.

Vows is a behavior driven development framework for Node.js. Vows was built from the ground up to test asynchronous code. It executes your tests in parallel when it makes sense, and sequentially when there are dependencies.

vTest is an automated functional and regression testing tool for web applications. It incorporates record, verify, playback and reporting capabilities. vTest supports both Microsoft Internet Explorer and Mozilla Firefox. All popular Internet technologies such as HTTP, HTTPS/SSL, JavaScript, DHTML, ActiveX, Java & Flash are supported. vTest also supports all major web application frameworks including ASP, ASP.NET, Java Servlets and JSP, PHP & CGI. vTest allows you to record and test your entire application in minutes by simply pointing and clicking on your Web application.

Watai (Web Application Testing Automation Infrastructure) is a declarative, bottom-up BDD, full-stack web testing framework. It is both a test runner engine (i.e. it executes tests) and a set of architectural patterns to make you write maintainable, solid end-to-end (GUI) tests. It automatically handles asynchronous operations without any work on your side.

Waterpig is a set of open source helpers to make the Capybara just that much nicer. Capybara is a library written in the Ruby programming language which makes it easy to simulate how a user interacts with your application.

Watij (pronounced wattage) stands for Web Application Testing in Java. Watij is a pure Java API created to allow for the automation of web applications. Based on the simplicity of Watir and enhanced by the power of Java, Watij automates functional testing of web applications through a real browser. Currently Watij supports automating Internet Explorer on Windows only. Future plans are in place to support others like Mozilla

Inspired by Watir development of WatiN started to make a similar kind of Web Application Testing possible for the .Net languages. Since then WatiN has grown into an easy to use, feature rich and stable framework. WatiN is developed in C# and aims to bring you an easy way to automate tests with Internet Explorer. WatiN Feature List:
* Automates all major HTML elements
* Find elements by multiple attributes
* Supports AJAX website testing
* Supports frames (cross domain) and iframes
* Supports popup dialogs like alert, confirm, login etc..
* Supports HTML dialogs (modal and modeless)
* A basic (extensible) logging mechanism
* Works with Internet Explorer 6 and Internet Explorer 7

Watir (Web Application Testing in Ruby) is a functional testing tool for web applications. It supports tests executed at the web browser layer by driving a web browser and interacting with objects on a web page. It uses the Ruby scripting language.

Watir implementation built on WebDriver’s Ruby bindings