Airfoil
Commercial
Airfoil streams any audio from your computer, from music services like Spotify and Pandora.
AirPlay
Free
AirPlay is a allows wireless streaming between devices of audio, video, device screens, and photos, together with related metadata.
Stream What You Hear
Open Source
Stream What You Hear is a Windows software to broadcast the sound of your computer.
AirMyPC
Commercial
AirMyPC is an Airplay Mirror Windows to AppleTV or ChromeCast.
WiFi Audio Wireless Speaker is an android app to play music wirelessly.
Compare Porthole with alternatives
Compare WiFi Audio Wireless Speaker and Porthole and decide which is most suitable for you.
Compare Stream What You Hear and Porthole and decide which is most suitable for you.