Hamster Pad - A social network built on top of Slack

Talkus - Chat with your website users from Slack

Kaboom by Hotspot Shield - Share messages & photos that disappear on any social network

Chatlio - When you have a business to run, your average instant messaging software just will not do. You need an internal presence upon which your entire team can collaborate on. Read more about Chatlio.

Tsu - Social that pays

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.