
start.me
Netvibes
Symbaloo
Yahoo
Tabliss
igHome
Momentum
The best iGoogle alternative. Chris Pirillo calls Protopage "The best designed".
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

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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 | protopage.com | zip-codes.com |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Protopage yet.
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...
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When comparing Protopage and ZIP Code API, you can also consider the following products.

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First personalized dashboard publishing platform for the Web. Digital life managment, Widget distribution services and brand observation rooms.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Symbaloo is a personal start page, your personal desktop for the Internet.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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