V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
Pipedrive - Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.
Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.
Zoho CRM - Omnichannel CRM for Businesses of all sizes
Google Audience Center - 3 votes and 6 comments so far on Reddit
Freshsales CRM - A full-fledged CRM for high-velocity sales teams.