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

Automated Capture & Replay test tool for functional testing of web based applications and portals. web2test runs under Windows and Linux and supports Firefox, Internet Explorer, Mozilla and Seamonkey. Test scripts are browser and platform independent and tolerant to GUI changes. A 100% component based approach allows detailed and complex checks. There is no programming knowledge needed for creation and maintenance of test scripts. Additionally web2test provides a scripting interface in Jython and Groovy. The tool can be integrated with HP TestDirector for Quality Center and supports the testing of AJAX applications and data driven and distributed testing.

WebAii Testing Framework is a free web automation framework for writing functional tests for AJAX and Silverlight applications. The framework offers one consistent API that allows users to automate the UI of web applications as part of regression testing. Besides Silverlight support, a key benefit of WebAii Testing Framework is the browser abstraction, which allows developers to create a test once and execute it against all major browsers.

webdriver-js is a client for controlling webrowsers via the upcoming Selenium2 WebDriver. The webdriver-js client connects to one or more instances, requests a new browser session and then can remotely control the browser including sending keys and certain mouse events as well as execute arbitrary javascript on the browser and retrieve those results.