CRMfusion - CRMfusion is a suite of data quality and data integration tools that integrate well with Salesforce.
VisitorTrack - Cloud Based Affordable Biometric Visitor Management System To Eliminate Maintenance & Expense of ID Cards & Printers, Replace Paper Logs & Sign-In Sheets.
ImportBuddy - It gives you a very easy solution to Add/Update CSV data into any standard or custom object of Salesforce without leaving Salesforce.com
Melissa Listware - Melissa’s Listware is the all-in-one data quality tool designed to stop bad data in its tracks. It’s affordable and easy to use with pay-as-you-go pricing that includes up to 1000 free credits every month.
DataArchiva - DataArchiva: An Enterprise-grade Data Archiving Application for Salesforce
Melissa Data Quality - Melissa helps companies to harness Big Data, legacy data, and people data (names, addresses, phone numbers, and emails).