Google Analytics Lead Generator - Instantly get free leads from Google Analytics
Hunter - Find all the email addresses related to a domain
LeadBot by Drift - Qualify leads on your website without forms or humans
Snov.io - More leads. More sales. More revenue.
Replug - Get extra traffic and leads from your shared links
Apollo.io - Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.