WebVisor is a technology developing as part of the Yandex.Metrica web analytic service. The main purpose of WebVisor is to record user's session (some sort of screen capture) and give an ability to replay it later. This tool is designed to collect and analyze (mostly manually) user behaviour. WebVisor can capture mouse movements, clicks, DOM changes (to reflect some dynamic content like SPA), also works with touch interfaces and supports almost any modern browsers and mobile devices.