Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
indemandly - Live chat 2.0: Customer messaging that converts
V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
Message Me - Website to create your contact business card
Intercom Facebook integration - Read, manage & respond to Facebook messages from Intercom
Helloify - Customer and team messaging