BuiltWith - Find out the technology behind websites

Hunter - Find all the email addresses related to a domain

Kompyte - Track & analyze competitors in real time.

Snov.io - More leads. More sales. More revenue.

Vistaar - Vistaar is an innovator of price and revenue management solutions. Vistaar’s pricing software enables companies to achieve pricing best practices through price analytics, price optimization, price list management, and deal management.

Apollo.io - Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.