The ability to create scripts in any language that can be tested easily without having to worry about syntax errors or compatibility issues.
It's very easy for beginners as well as advanced users alike because it has all features you need at your fingertips. I have used other platforms like LoadUI but they were not user friendly enough compared to this one. If you are looking into creating automated tests then give this product a try! We use Testerookey to automate our web applications using JavaScript/JQuery which helps us reduce manual efforts significantly.