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

No More Google
Have I Been Sold?
extensions.af
MyPermissions
Privacy First Products
HackNotice
authID.ai
A manual to protect yourself against hackers ๐จโ๐ป

Which is more popular?
Based on our record, Watch Your Hack seems to be more popular. It has been mentioned 2 times since March 2021.
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 | watchyourhack.com |
| Company | Startup from the United States ยท 2026 | โ |
| 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 โ no separate APIs by country or data type. What it does Address validation and standardization โ production-grade parser with ZIP+4 append, refreshed monthly Radius search โ centroid haversine and...
No description of Watch Your Hack 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 Watch Your Hack yet.
How often each product is chosen within a category, 0โ100% relative to the other.

Share your experience with using ZIP Code API and Watch Your Hack. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
The website is a manual of how to keep safe online and it has been created by six professional hackers and it's called: https://watchyourhack.com/. Source: about 4 years ago
Https://watchyourhack.com/ Watch Your Hack explains how to protect yourself from hackers, in laymans terms. Six professional hackers helped create this manual. Source: about 4 years ago
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Check if your email address was sold without permission
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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