Getting group-chat to work is hard. Getting group-chat to work easily is immensely hard. That's when a friend told me about his app, www.tesla.im.
Tesla.im is Instant Messaging for Teams/Groups. Where Tesla.im stands out from the rest is its intuitive design. Its very simple and easy to use. No lengthy forms to fill. Just click 'Guest Login' and you are taken into the app. You can register if you like it. Else just logout and forget about it.
It's a 100% free service (ad-free too) and it seems reliable, stable and secure. The engineers at Tesla.im tell me that its built with node.js and can handle many many times the concurrent connections compared to existing technologies like XMPP. (Google just gave up on XMPP just a few days back - Link)
Tesla.im is still an alpha release, with more features like desktop notifications, etc lined up.
Experience it and let me know your thoughts.