#CastLab supports #FCast because it is an open source casting protocol, built as an alternative to Chromecast and AirPlay. You install the receiver app on a TV or computer (Android TV, Linux, Windows, macOS) and cast to it from CastLab.
Unlike DLNA, which depends on your TV, FCast can be installed on any supported device. Both are open and complement each other well.

More about FCast: github.com/futo-org/fcast

GitHub - futo-org/fcast: FCast Issue Tracker and Source Mirror

FCast Issue Tracker and Source Mirror. Contribute to futo-org/fcast development by creating an account on GitHub.

^GitHub