NetHunt CRM - Turn Gmail into a smart CRM
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Streak - Manage customers inside Gmail
Salesforce Service Cloud - Service Cloud integrates customer service with social networks and provides a self-service customer portal and knowledge base system.
Nureply - Email marketing software made for cold email marketing professionals. Using advanced AI to generate email personalization in seconds
Zendesk Support - Social Customer Support and Help Desk and Ticketing