ESPN3 is an online streaming service that offers live sports events, highlights, and replays. It is part of the ESPN network and is accessible through various devices, including computers, smartphones, and smart TVs. Users can watch a wide range of sports, including college athletics, professional leagues, and international competitions. To access ESPN3, viewers typically need a subscription to a participating cable or satellite provider. The service is designed to provide sports fans with flexible viewing options, allowing them to watch games and events from anywhere with an internet connection.