Data Ladder - Data Ladder is a data quality software helping business users get the most out of their data through data matching, profiling, deduplication
ZaapIT - Mass Merge, auto merge, duplicates cleanup, bulk edit, bulk update, bulk delete , mass lead convert
Email Verifier - Email verifier app lets you verify email.
Duplicate Check - Start creating data happiness. Find, merge and prevent duplicate records in your Salesforce Organization.
RingLead - RingLead offers a complete end-to-end suite of products to clean, protect, and enhance company and contact information.
Apsona for Salesforce - Apsona for Salesforce is an add-on application for Salesforce to manage the data.