PieSync - Automatic 2-Way Leads & Contacts Sync
PieSync integrates Salesforce with many cloud apps
Paid | Discounts for nonprofits
You must pay to use this solution. Discounts are available for nonprofits.
http://www.piesync.com/pricing/?utm_source=salesforce&utm_medium=marketplace&utm_campaign=connector
Default Plan
Lowest Starting Price
$49Company/Month