Wikipedia
Serpstat
Serpstat is a keyword and ranking research tool. Initially it was used within the Ukrainian marketing agency Netpeak that became its main investor. Serpstat's database includes information on 10 geographical regions of Google (USA, Australia, United Kingdom, Bulgaria, Lithuania, Ukraine, Russia, Kazakhstan, South Africa, Canada) and 3 regional databases of Yandex – Yandex Ukraine, Yandex Moscow and Yandex Saint-Petersburg.