PingPong is described as 'Effortless remote user research. You know that talking to your users is essential, but until now it has been painfully complex. PingPong takes care of all the hard stuff and saves you days of work. So you can be interviewing users in minutes!' and is an website. There are more than 10 alternatives to PingPong, not only websites but also apps for a variety of platforms, including Mac, Windows, iPhone and iPad apps. The best PingPong alternative is UserTesting.com. It's not free, so if you're looking for a free alternative, you could try UXtweak or Poll the People. Other great sites and apps similar to PingPong are Userbrain, userinput.io, UserBob and Uxeria.com.