Skype

Skype was a video-communications program. Panda used Skype to talk to one of his previous selves from within a universe of anti-matter. (PROSE: From Wildthyme with Love)

Behind the scenes

 * On the 3 May 2017 an interactive game was released on Skype called The Saviour of Time, that sees a Doctor Who Bot connect with Skype-users' accounts to save the day.