Interestingly, that's exactly what I personally am working on: mobile clients for Quassel, easy deployment (single docket container for everything), quassel-as-a-service for people to just invite others, etc.

A web app also exists, but the discoveravility is an issue.

Packing the things up properly, marketing them well, etc is easier, as we also have the advantage of being open source, which helps in open source communities.