is a web-based communication platform that allows users to communicate via standard instant messaging as well as to make video and phone calls for little to no cost. The platform supports group video calls involving up to 25 people and the exchange of documents, images, videos, and other multimedia files for easy, streamlined sharing.
For group video calls, all participants need Skype 5.0 for Windows or Mac (or higher), in addition to standard webcams. Skype no longer supports Mac OSX 10.5 and below.
Skype for Mac is also available on iPhone
, and Windows