Clearbit - Clearbit provides Business Intelligence APIs
RingLead - RingLead offers a complete end-to-end suite of products to clean, protect, and enhance company and contact information.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Data Ladder - Data Ladder is a data quality software helping business users get the most out of their data through data matching, profiling, deduplication
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
Cloudingo - Cloudingo - a cloud-based SaaS, connects to Salesforce and allows system administrators to scan their entire database for similar or duplicate records.