What is Skype? Skype is software that enables the world's conversations. Millions of individuals and businesses use Skype to make free video and voice one-to-one and group calls, send instant messages and share files with other people on Skype. You can use Skype on whatever works best for you - on your mobile, computer or a TV with Skype on it. Skype is free to download and easy to use. If you pay a little, you can do more – like call phones, access WiFi and send SMS. You can pay as you go or buy a subscription, whatever works for you.