Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

NordVPN
ProtonVPN
Windscribe
OpenVPN
TunnelBear
Hotspot Shield
Mullvad
ExpressVPN is the worlds fastest VPN service.
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Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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| Website | zip-codes.com | expressvpn.com |
| Company | Startup from the United States Β· 2026 | Startup from British Virgin Islands |
| Listed in |
In their own words, as submitted to SaaSHub.

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America β no separate APIs by country or data type. What it does Address validation and standardization β production-grade parser with ZIP+4 append, refreshed monthly Radius search β centroid haversine and...
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ExpressVPN is one of the leading VPN providers in the world. The kill switch or the Network Lock in ExpressVPN ensures thereβs no data or IP leak when the VPN tunnel is compromised. Furthermore, this software is...
ExpressVPN is deemed as one of the best VPN services to have ever existed, and we can see why. It offers a reliable and fast connection no matter where you live. With speeds up to 580Mbps and over 3000 servers,...
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Windscribe is a desktop application and browser extension that work together to block ads and trackers, restore access to blocked content and help you safeguard your privacy online.
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