Skype is a free software application that allows users to make video and voice calls to others around the world. It can be used on computers, mobile devices, and tablets. The document discusses how Skype can be used in educational settings to allow students to collaborate on group projects remotely by communicating and sharing files in real-time. They can work together collectively on assignments without needing to meet in-person. Skype provides opportunities for interactive learning between students in different locations. It expands the traditional classroom by facilitating global partnerships and discussions.