I reached out to Leah with the same questions, but in lieu of a response I spent a few minutes setting up a replacement that is both an IRC server and a hosted web client: https://github.com/LocalSense/hosted-irc
I'll hack on it a bit more tonight, but it shouldn't be too difficult to replicate what Grove.io does.
We're actually using a forked version of Subway for the UI. Our package also includes an IRC server as well, as it aims to be a complete Grove replacement.
I'll hack on it a bit more tonight, but it shouldn't be too difficult to replicate what Grove.io does.