Ventrilo is voice chatroom software (like discord) that is self-hostable. It's been around for 21 years, has a wikipedia page [0], and is mentioned in at least

Ventrilo is voice chatroom software (like discord) that is self-hostable. It's been around for 21 years, has a wikipedia page [0], and is mentioned in at least one old meme-worthy DOTA song [1], so the OP likely didn't feel it needed an introduction. [0] https://en.wikipedia.org/wiki/Ventrilo https://en.wikipedia.org/wiki/Ventrilo [1] https://youtu.be/qTsaS1Tm-Ic?feature=shared https://youtu.be/qTsaS1Tm-Ic?feature=shared