V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
Synthesio - Synthesio is a social intelligence tool or a marketing software that is specially made for the purpose of social media monitoring and social analytics.
Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.
Swift Social - All-in-One Social Media Growth and Management Tool
Google Audience Center - 3 votes and 6 comments so far on Reddit
LeadsRX - LeadsRX is a marketing attribution software that gives marketers insights into which advertising campaigns result in conversions.