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
Froged - One click solution providing easy-to-use marketing, sales and support services to turn website visitors into happy customers.
Trakdesk - Trakdesk is a fully customizable customer support platform with all the bells and whistles you would need to provide exceptional customer support
Intercom on Customer Engagement - A book on how to create messages that drive engagement
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Keep Your Friends Close - A free e-book about maximizing Customer Lifetime Value