CRMfusion - CRMfusion is a suite of data quality and data integration tools that integrate well with Salesforce.
Zint - Zint is a top-of-the-line sales intelligence platform that makes it easier for businesses to find and track their most important prospects.
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
RampedUp - RampedUp offers data appending, data cleansing and account based selling solutions for Salesforce.com
DataArchiva - The Next-Gen Data Management Platform for Salesforce
Growthlead.io - Growth Lead is a B2B social selling tool for Linkedin that helps you scale your outreach.