The best alternatives to Snitcher are Clearbit, Visitors.guru, and Leadberry. If these 3 options don't work for you, we've listed a few more alternatives below.
With Visitors.guru you can see which companies have visited your site. You just need to put a JS code on webpage and then receive details to make a warm sales connection.
The most complete IP to geolocation API. Use ipXapi's extensive set of localization data to implement geographic restrictions on your site, optimize ad targeting or deliver user experiences customized based on the location of your website visitors.