AnyMailFinder.com - Find anyone's email address
LeadBot by Drift - Qualify leads on your website without forms or humans
Hunter - Find all the email addresses related to a domain
Mitch - The unofficial mobile app for itch.io
monocles search - monocles search is a web search engine, powered by Searx.
Leadfeeder - Leadfeeder converts your website visitors into sales. Connect your website's Google Analytics to Leadfeeder and unlock the power of seeing who`s visiting your site!