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

Kasm
CapLinked
ADEC Preview VDR
ShareVault
KYCme
FORDATA VDR
EthosData
DataRooms.com is a leading provider of secure virtual data room services for due diligence processes and corporate information exchange.

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 | datarooms.com |
| Company | Startup from the United States · 2026 | — |
| 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...
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DataRooms.com - Secure Virtual Data Rooms
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When comparing ZIP Code API and DataRooms.com, you can also consider the following products.

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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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CapLinked provides simple and secure virtual data room solutions for online document sharing and management. Enterprise-grade security and 24/7/365 support.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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ADEC Preview offers a range of specialist BPO strategies, scanning, capture and archiving services designed to improve efficiency and reduce the costs of managing and safeguarding your key documents.
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