The new service, dubbed Sky Go, will allow access to live TV content on PCs, iPhones, iPads, iMacs and laptops.
Sky Go brings together two existing services, Sky’s online TV service Sky Player, and Sky Mobile TV, under one banner.
Customers can register up to two devices to watch live and on-demand content on the Sky Go.
Non-Sky customers can also sign up to the service with a monthly subscription priced between £15 and £40.
Channels on the service will include: Sky Sports, Sky Movies, ESPN, Nickelodeon, MTV and Gold.
Stephen van Rooyen, deputy managing director of Sky’s customer group, says: “The explosion of smartphones and tablets demonstrates the increasing consumer demand for accessing entertainment and communicating on the move.
“We have already responded to this by offering a range of services, including live TV, across many new innovative platforms and devices, like laptops and iPhones.”
Sky Go will also be supported by WiFi network The Cloud, which the company purchased earlier this year.
The service will begin to roll out from July.