Difference between WinRunner and Test Director?

WinRunner is a tool for automatic testing. The WinRunner is mostly used for Regression Testing and GUI testing purpose. Testing will be done very fast, reliable and efficient. Where as, TestDirector is a test management web based tool where the centralized database is used for managing the requirements documents, specification documents, Test cases, test plans and Defect tracking and managing. The WinRunner and TestDirector are products from Mercury.

WinRunner is Functional and Regression Testing tool. It is a Record and Playback tool. TestDirector is a test management tools. You can execute the test scripts through TestDirector Environment.

Winrunner is functional- regression testing tool. It is product of Mercury interactive. It is very useful testing tool due to which we can do certain level complex testing.
Test director is test management tool, it keeps perfect records for your requirement phase to defect report. Designing of testcases is good engouh.