Clearbit - Clearbit provides Business Intelligence APIs
SproutSocial - Sprout Social is a social media management tool created to help businesses find new customers & grow their social media presence. Try it for free.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Shoutlet - Home - Shoutlet : Shoutlet
DiscoverOrg - DiscoverOrg is an IT sales intelligence platform providing technology marketers access to data, IT org charts, and real time projects.
Owler - Owler is a crowdsourced data model allowing users to follow, track, and research companies.