AirBrowser - Desktop browser for your Apple TV
BitTorrent Live - Live streaming video. iPhone, Apple TV, MacOS. Android soon.
AirParrot - AirParrot is an interesting piece of software that allows you to view content from your Mac desktop through your television set if you have an Apple TV that can act as a bridge between the two devices. Read more about AirParrot.
IINA - The modern video player for macOS
X-Mirage - X-Mirage is an AirPlay server for Mac and Windows PC that makes it simple to use your Mac or Windows PC to show off your iOS devices on a bigger screen, and record everything onscreen with one click.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.