TestNG is an open source automated testing framework inspired from JUnit and NUnit. NG stands for Next Generation.It helps to write powerful tests with easy annotations. TestNG helps to generate test results in much better way. TestNG framework can be easily integrated with different tools like Maven,Jenkins etc.
Advantages of TestNG:
1.It allows data driven testing.
2.Test Cases can be grouped more easily.
3.Grouping of Test methods into Test Groups.
4.Annotations are easier to understand.
5.Parallel execution of test methods is possible.
6.HTML reports can be easily produced.
