Yandex.ru has acquired the 18th position. It is a Russian company which operates 4th largest search engine in the world according to comScore and with more than 150 million searches per day as of April 2012, and more than 50.5 million visitors (all company's services) daily as of February 2013. Yandex.ru is the most popular and most visited search engine in Russia. Based on Alexa as of 12/02/2015, Yandex handle 1.7 million daily hit and 850000 visitors visit per day.

Yandex’s roots trace back to 1990, when Arkady volozh and Arkady Borkovsky founded the company Arkadia, which developed by MS-DOS software. Their software featured a full text search with Russian morphology support. In 1993 Arkadia became a subdivision of Comptek International. In 1993-1996 the company continued developing its search technologies and released software for search technologies. In 1993 Arkady Volozh and Ilya Segalovich, friends since their school days and by then working together to develop search software and invented the word “Yandex” to describe their search technologies. The name stood for “Yet Another iNDEXer”