LiveChat - LiveChat - premium live chat software. Approach customers directly on the website, make connections and drive more sales using LiveChat.

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

Zendesk for Startups - Everything you need for seamless customer conversations.

Olark - Real-time chat and monitoring of your website visitors through Google Talk and Jabber.