Obie.ai - Access knowledge quicker without leaving Slack
tawk.to - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page
Knowledge Plaza - Knowledge Plaza is a SaaS Platform dedicated to Social Knowledge Management.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
LiveChat - LiveChat - premium live chat software. Approach customers directly on the website, make connections and drive more sales using LiveChat.