SAS Data Quality - SAS Data Quality gives you a single interface to manage the entire data quality life cycle: profiling, standardizing, matching and monitoring.

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.

CRMfusion - CRMfusion is a suite of data quality and data integration tools that integrate well with Salesforce.

Microsoft Data Quality Services - Data Quality

ZaapIT - Mass Merge, auto merge, duplicates cleanup, bulk edit, bulk update, bulk delete , mass lead convert