Selenium- Selenium is a testing framework for web applications. Selenium is a suit of tools for web browser automation and it is composed of:-

1. Selenium IDE
2. Selenium RC
3. Selenium Webdriver
4. Selenium Grid

It provides a test domain-specific language (Selenese) to write tests in different programming languages, Like Java, C#, Perl, PHP, Python and Ruby.

Watir- Web Application tool used for Testing in Ruby is also known as water. Watir was developed by Bret Pettichord and Paul Rogers. This is a Ruby libraries for automating the different web browsers. It allows you to easily read, write and maintain tests.

FlexMonkey- Without FlexMonkey, analyzing the User Interface components of your Flex application can be very difficult and time consuming. This tool is used for testing Flex and Air based applications - Record and Playback - Verifying that ER match AR.

TestLink- TestLink is a open source web-based test management tool which provides various types of features such as:-

1. Test specification
2. Test plans and execution
3. Reporting
4. Requirements specification
5. collaborate with well-known bug trackers.

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