AllCast has let almost any Android device send photos and videos to the Chrome desktop browser for a while, but mirroring your screen has been a pain; if you didn't have a Nexus 5, you were out of luck. That clever feature is about to get a lot more useful, though. Koushik Dutta has reworked the app's mirroring code so that it now uses a common video format (H.264), letting you mirror the screen of any halfway modern phone on your PC; if you can run AllCast in the first place, you're probably fine. There's significant lag, but it should be enough to show your friends a hot new app without having to buy a Chromecast (or a TV, for that matter). The upgrade should arrive soon, so swing by Google Play if you'd like to use your computer as a second screen.