jQChat is a jQuery plugin for instant messaging like facebook/gmail chat. Is a plugin that can be used to add a JavaScript-based chatting system to your site.
ChatJS is a full-featured, lightweight, Facebook style jQuery plugin for instant messaging. ChatJS also comes with a server side implementation for ASP.NET/SignalR out of the box.
Pusher Chat , is a Facebook like chat jQuery plugin using Pusher API.
Features