BuiltWith - Find out the technology behind websites
FormAssembly - Easy drag-and-drop web form builder that integrates with Salesforce, Google Apps, ExactTarget, and...
FindThatLead Prospector - Feed your sales team with daily leads.
LeadsBridge - LeadsBridge is an all-in-one solution for lead generation that easily helps you fills the gaps connecting over 200 CRM or Email Software.
Lead Forensics - B2B website analytics and lead generation.
CB Insights - CB Insights is a company database for the venture capital and corporate development community.