IBM Rational Performance Tester vs Selenium HQ comparison

IBM Rational Performance Tester is a performance testing solution that validates the scalability of web and server applications. Rational Performance Tester identifies the presence and cause of system performance bottlenecks and reduces load testing complexity.

Selenium HQ is an umbrella project that includes a number of tools and frameworks that allow for web browser automation. In particular, Selenium offers a framework for the W3C WebDriver specification, a platform- and language-neutral coding interface that works with all of the main web browsers.

Selenium is a toolset for automating web browsers that uses the best methods available to remotely control browser instances and simulate a user's interaction with the browser. It enables users to mimic typical end-user actions, such as typing text into forms, choosing options from drop-down menus, checking boxes, and clicking links in documents. Additionally, it offers a wide range of other controls, including mouse movement, arbitrary JavaScript execution, and much more.

Although Selenium HQ is generally used for front-end website testing, it is also a browser user agent library. The interfaces are universal in their use, which enables composition with other libraries to serve your purpose.

The source code for Selenium is accessible under the Apache 2.0 license. The project is made possible by volunteers who have kindly committed hundreds of hours to the development and maintenance of the code.

Selenium HQ Tools

These three main Selenium HQ tools have powerful capabilities:

• WebDriver: If you are just starting out with desktop or mobile website test automation, you will be using WebDriver APIs. WebDriver controls the browser and executes tests using the automation APIs that browser vendors provide. This gives the impression that a real person is using the browser. Because WebDriver's API does not need to be compiled alongside application code, it is not intrusive. As a result, you can test the same application that you push live.
  
  
• IDE: Develop your Selenium test cases using an IDE (integrated development environment). The most effective way to create test cases is to utilize this simple Chrome and Firefox extension. IDE uses Selenium commands that are already in use to record user activity in the browser with parameters set by the context of the element. This is an excellent approach to learning Selenium script syntax and will save you time.
  
  
• Grid: You can run test cases on several machines and operating systems with Selenium Grid. The local end controls how the test cases are triggered, and the remote end automatically runs the test cases after they are triggered.

Reviews from Real Users

Selenium HQ stands out among its competitors for a number of reasons. Two major ones are its driver interface and its speed. PeerSpot users take note of the advantages of these features in their reviews:

Avijit B., an automation tester at a tech services company, writes of the solution, “The driver interface is really useful. When we implement the Selenium driver interface, we can easily navigate through all of the pages and sections of an app, including performing things like clicking, putting through SendKeys, scrolling down, tagging, and all the other actions we need to test for in an application.”

Another PeerSpot reviewer, a software engineer at a financial services firm, notes, “Selenium is the fastest tool compared to other competitors. It can run on any language, like Java, Python, C++, and .NET. So we can test any application on Selenium, whether it's mobile or desktop."