Int Engine - Fastest and the most powerful data cleansing engine that is based on USPS and Census TIGER databases.

It provides:

• Address parsing based on USPS data
• Geocoding based on Census TIGER data
• Addresses standardization
• Phones verification
• Dates standardization

More details you will find on the Int Engine site

• .NET 4.5+
• WCF
• REST
• REDIS
• SQL Server 2012