Slacking Pigeons - Chat in real time with your users directly from Slack
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Avochato - Text messaging for your business.
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.
Slaask for Social Networks - Chat with your customers on Facebook and Twitter via Slack!
Duedot - Dossier collaboration platform