Testing tools are classified in to four generations.
- First generation tools are commercial and support inbuilt languages. For example WinRunner is licensed tool and support TSL(Test Script Language).
- Second generation tools are also commercial but they can support development languages to prepare test scripts. For example QTP is licensed and support VB-Script language.
- Third generation tools are opensource(Free of cost) and they can support development languages. For example Selenium is opensource and support core java.
- Fourth generation tools are not tools and they are direct programming languages like PERL, PYTHON, RUBY and REXX.
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