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

Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.

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

CB Insights - CB Insights is a company database for the venture capital and corporate development community.

JivoChat - JivoChat is a live chat that enables you to talk to visitors on your website

Tracxn - data on companies