We mentioned a few months back Microsoft's beta of a browser-based intrerface to Skype. Now, reports Engadget, Skype will be able to work without a plug-in (as was required for the beta). However, it will work -- at least at first -- only with Microsoft's Edge browser. The latest Windows 10 Insider Preview build comes with Object RTC API. That's the element that allows real-time audio and video communication without the need for any installation not just for Skype for Web and Outlook.com, but also for other WebRTC-compatible services. To note, Chrome, Firefox and Safari all support WebRTC standards, but it's unclear if and when Skype will enable a plug-in-less experience for those browsers, as well.