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

McKesson Connect
PharmaTrader
Sleeve
Nuchange Pharmacy Management Solution
GuardianRx
Electra HMS
Lo-Fi Radio
LookingGlass Cyber™ offers cybersecurity against phishing, malware and other cyber attacks for small business, global enterprises and government agencies.

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 | zip-codes.com | lookingglasscyber.com |
| Company | Startup from the United States · 2026 | Startup from the United States · 50 - 99 employees · 2006 |
| 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 — 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...
No description of LookingGlass yet.
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
No analysis of LookingGlass yet.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and LookingGlass. For example, how are they different and which one is better?
When comparing ZIP Code API and LookingGlass, you can also consider the following products.

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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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PharmaTrader is our next generation GST Inventory and Accounting software.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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