Microsoft last week introduced a new Web-based Skype for Linux client in alpha. Based on WebRTC, it uses Microsoft's next-generation calling architecture. It lets users share files, photos, videos and new emoticons. Users will be able to call others using the latest versions of Skype on Windows, Mac, iOS and Android. However, they won't be able to make or receive calls using earlier versions of Skype for Linux. Microsoft also introduced an alpha version of Skype based on WebRTC for users of Chromebooks or the Chrome browser on Linux.