AccuZIP - AccuZIP Postal Software and Data Cleansing For Direct Mail Marketing
QGIS - QGIS is a desktop geographic information system, or GIS.
Loqate - The Standard in Global Address Verification
Esri ArcGIS - ArcGIS provides contextual tools for mapping and spatial reasoning so you can explore data & share location-based insights. ArcGIS is the heart of the Esri Geospatial Cloud. Try ArcGIS for free with 21-day trial.
Lob Address Verification API - Lob's address verification API enables companies to validate and standardize mailing addresses to ensure the mail reaches their customers.
Geopointe - Geopointe enables Salesforce users to gain spatial insights via maps and apply geography to business processes.