I'm almost there with Shout IRC. I got it fully working in Shout public mode, but that disconnects users and sends the IRC away message when they reload the page, like Kiwi IRC.

In private mode, Shout keeps you connected and doesn't send the away when the page reloads.. perfect for our use case. I'm just figuring out how to auto create new accounts and skip the Shout login screen. Should have something deliverable by this weekend.