Holla is a group chat application, a bit like Campfire. You can create channels, then invite friends to those channels, chat and share files.

The interface is totally asynchronous, which is one of the most important aspects of Holla. You can CRUD channels, add messages and upload files – all without blocking any of the UI. Any AJAX requests that need to happen, happen in the background. Asynchronous interfaces, I think, are the future of web apps, and what the book I’m writing centres on.

All channel editing is in place, and changes are reflected across the interface immediately. The request to the server is sent in the background.