Vtiger Help Desk - Vtiger Help Desk provides multi-channel helpdesk solution.
Salesforce Service Cloud - Service Cloud integrates customer service with social networks and provides a self-service customer portal and knowledge base system.
Verint - Verint provides actionable intelligence solutions for enterprise workforce optimization and security intelligence.
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
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Oracle Service Cloud - Web, Social & Contact Center