Hi! We've launched a new Chat UI Kit for Sketch. We've included 36+ screens for the most popular features like one-on-one chat, group chat, settings and more. As you may already know, chat is now an integral part of nearly every popular mobile app and site, in one form or another. We have designed this messaging UI kit using Sketch, but have also provided it in other formats incase you do not have Sketch. We truly recommend Sketch to every designer/developer out there!