AirBeamTV is described as 'Mirror your Mac screen to a Smart TV. No wires and no additional hardware needed! You can also stream individual video files or watch one window on your Mac, and another window on your TV!' and is an app in the Video & Movies category. There are three alternatives to AirBeamTV for Mac and Windows. The best alternative is AirParrot. It's not free, so if you're looking for a free alternative, you could try MKMirror or Oka Mirror.
MKMirror allows you to mirror your Desktop, built-in Camera, video and audio devices to Smart TVs and mobile devices. MKMirror uses HTTP Live Streaming (HLS) protocol, an adaptive bitrate streaming communications developed by Apple Inc.