CRMfusion - CRMfusion is a suite of data quality and data integration tools that integrate well with Salesforce.
Optmyzr - Optmyzr AdWords Tools. Optimization Solutions, Quality Score Tracker, Landing Page Checker, and more. Free Trial Available.
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
LiveIntent - LiveIntent is a web platform that offers effective e-mail advertising services for marketers and publishers.
DataArchiva - DataArchiva: An Enterprise-grade Data Archiving Application for Salesforce
Affise - Affise offers performance marketing solution to manage and analyze affiliates, advertisers, creatives, conversions, offers, and payments.