OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Airfoil - This software is from the Rogue Amoeba company, built to run on Mac and Windows platforms. It’s an audio-based software that allows the computers sound to play over a network device. Read more about Airfoil.
Lightstream - Powerful, cloud-based live streaming studio.
AudioRelay - Listen to your PC audio, use your phone as a mic or stream audio from your phone
XSplit - Live stream and record your content with ease & share it to streaming services like Twitch, YouTube, Facebook, Mixer, etc. Start your broadcast today.
SoundWire - SoundWire does audio mirroring (audio cast). You can use any music player on your PC or laptop like Spotify, YouTube, or iTunes and stream low-latency live sound over WiFi directly to your Android device.