Google Analytics is a web analytics service that provides many tools to analyze websites of all sizes, monitor traffic, track users' behavior, get marketing insights, and more.
StatCounter
StatCounter is a web traffic analysis service that helps you track and analyze your website visitors' location, browsers, devices and more, for better decision making.
SmartLook
SmartLook is an analytics solution for websites and mobile apps that helps you improve user experience by learning more about your site visitors' behavior.
Yandex.Metrica
Yandex.Metrica is a web analytics service by Yandex that lets you see detailed statistics, get recordings of how visitors behave, track your traffic sources, and more.