In the pro world there was Dante, Ravenna, and to a lesser extent AVB. People didn't like that nothing worked with each other. The AES got the AoIP manufacturers together and standardized a union of these technologies and called AES67. Now most pro gear is compatible and it is in widespread use in (mostly) large audio installations (think stadiums/venues, broadcast, theme parks, etc).

There's not much in way of open source solutions to using it, and not many devices you would want to buy as a consumer that uses it, however.