CRMfusion - CRMfusion is a suite of data quality and data integration tools that integrate well with Salesforce.
MapAnything - MapAnything is a mapping and geo-analytics solution available to Salesforce users that provides mapping, schedule planning, and more.
Oceanos - Oceanos is a contact data management solution.
Duplicate Check - Start creating data happiness. Find, merge and prevent duplicate records in your Salesforce Organization.
ZaapIT - Mass Merge, auto merge, duplicates cleanup, bulk edit, bulk update, bulk delete , mass lead convert
DupeCatcher - DupeCatcher is a provider of Salesforce data quality and cleansing software.