What are some alternatives?
Slack - A messaging app for teams who see through the Earth!
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
LivePerson - Enhance user experience on your website with live chat software, one of LivePerson's many real-time engagement solutions.
LiveAgent - Live chat software with the right portion of helpdesk functionality. Ticketing, Livechat, Reports. Hosted or On-Premise. Starting at $15. FREE 14 day trial.
Flock - A faster way for your team to communicate
Salesforce Service Cloud - Service Cloud integrates customer service with social networks and provides a self-service customer portal and knowledge base system.