Honk

This app doesn’t mention being inspired by Unix talk but it works exactly like it, or nearly. I remember using talk between users on Unix machines back in the 90’s and it was pretty awesome really. Because both users type at the same time you could actually talk at the same time as the other person. It was limited to two users, but still very cool. Not sure about Honk. Will have the problem of adoption that all apps like this have.