What are some alternatives?
When comparing Cardhop and InsideView, you can also consider the following products
Google Contacts Map - See all your Google Contacts on a Google Map
DiscoverOrg - DiscoverOrg is an IT sales intelligence platform providing technology marketers access to data, IT org charts, and real time projects.
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!
LinkedIn Sales Navigator - Sales tool for LinkedIn users.
The Contact Guru - Managing your contact list so you don't have to
Clearbit - Clearbit provides Business Intelligence APIs