
Envoy
The Receptionist
TractionGuest
SwipedOn
Teem
WhosOnLocation
VisitorTrack
Connect with Confidence
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

Which is more popular?
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|---|---|---|
| Website | proxyclick.com | zip-codes.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Belgium · 10 - 19 employees · 2004 | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

Proxyclick is a cloud-based solution transforming how employees, visitors, and contractors flow in and out of locations around the world. With Proxyclick, organizations ensure people are welcomed safely and efficiently on-site while ensuring all work locations are secure and comply with data...
API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
What each product offers, as listed by its team.

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When comparing Proxyclick and ZIP Code API, you can also consider the following products.

Visitor registration that's changing how guests are greeted in companies around the world.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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The Receptionost is a visitor managemnt solution that has visitor logging system to track visitor traffic.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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