CoScreen is described as 'Turns your extended screen into a remote collaboration platform. The app provides an entirely new remote collaboration experience through simultaneous multi-user screen sharing, remote control and audio chat' and is an app in the remote work & education category. There are more than 25 alternatives to CoScreen for a variety of platforms, including Mac, Windows, Linux, Web-based and Android apps. The best CoScreen alternative is TeamViewer. It's not free, so if you're looking for a free alternative, you could try TeamViewer or Remmina. Other great apps like CoScreen are LogMeIn Resolve, join.me, Jam and Apple Screen Sharing.