CiviCRM - A Constituent relationship management for the Civic Sector
Salesforce Data.com - Data.com provides company profiles and contact information across millions of businesses worldwide.
Odoo CRM - Open Source CRM
MailGet Enricher - MailGet Enricher is a lead enrichment software which transforms any email address into complete person’s profile.
biznessmaker - The free all-in-one solution for your company.
ActivePrime - ActivePrime platforms provide data enrichment solutions for CRM systems.