Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Mutiny - Personalize your website for each visitor
Talkus - Chat with your website users from Slack
Clearbit Company Logo API - Get any site's company logo with just a URL
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.
Clearbit Connect - Clearbit Connect is a free extension that surfaces actionable information on the people who email you.