CRMfusion - CRMfusion is a suite of data quality and data integration tools that integrate well with Salesforce.
Cloudingo - Cloudingo - a cloud-based SaaS, connects to Salesforce and allows system administrators to scan their entire database for similar or duplicate records.
ZaapIT - Mass Merge, auto merge, duplicates cleanup, bulk edit, bulk update, bulk delete , mass lead convert
Apsona for Salesforce - Apsona for Salesforce is an add-on application for Salesforce to manage the data.
Cloudpond - Cloudpond is an AWS S3 storage connector utility for Salesforce.
RingLead - RingLead offers a complete end-to-end suite of products to clean, protect, and enhance company and contact information.