What is Gray Box Testing?

It is the combination of black box testing and white box testing.A gray box tester has partial knows the internal structure which can include documentation like design document,algorithms used.Thus it can include the benefits of black box testing and white box testing. 

It is also known as "Grey Box Testing".

Gray Box Testing = Black Box Testing + White Box Testing.

Tools for Gray Box Testing:

1.Chrome DevTools.

2.Rational Functional Tester.

3.Appium.

4.Selenium.

Applications:

1. It is mainly used for web application testing.

2.It is used in integration testing.