Building a Zulip Style Collaborative Chat App with Next.js and Velt

Building a Zulip-style chat app typically means wrestling with WebSockets, presence tracking, and real-time infrastructure. This tutorial walks through building a fully collaborative chat app using Next.js, Tailwind CSS, and Velt — which handles presence, inline comments, notifications, and real-time sync out of the box, no backend required. A working demo with user switching and theme support is included.