Salesflare - Simply powerful CRM. Automates your data to build better relationships and make more sales.
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.
Folk - The next generation contact manager
Zendesk Support - Social Customer Support and Help Desk and Ticketing