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
Hyperise - HYPERISE helps to create dynamic images that personalize to your email recipients and website visitors, on the fly.
Clearbit Company Logo API - Get any site's company logo with just a URL
BAZO - Personalized welcome prompts for your website
Clearbit Connect - Clearbit Connect is a free extension that surfaces actionable information on the people who email you.