Skype is a software application that allows users to make voice and video calls and chats over the internet. Calls to other Skype users are free, while calls to both landlines and mobile phones can be made for a fee using a debit-based user account system.
Skype was acquired by Microsoft.
Skype has the potential to use excessive bandwidth and has some known security issues. Please check with your local IT group to confirm whether it is allowed in your environment.