Crisp Chat - Multi-channel customer support software
Olark - Real-time chat and monitoring of your website visitors through Google Talk and Jabber.
Zoho SalesIQ - Discover the future of customer engagement
LiveChat - LiveChat - premium live chat software. Approach customers directly on the website, make connections and drive more sales using LiveChat.
JivoChat - JivoChat is a live chat that enables you to talk to visitors on your website
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.