OK.RU (also known as Odnoklassniki) is a social network that is popular in Eastern Europe and Central Asia.

Like Facebook, you have a customizable profile where you can upload pictures and videos. The design is based around a toolbar located on the left side of the screen where you can access a robust music section, group pages, and other parts of OK.RU.

Although it lists English as a language, there are many parts of the app written in Russian and most of the userbase doesn't write in English.