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

AI Chat SMS
Ask questions and receive AI answers through ordinary SMS. No app or mobile data required. New users get 15 free messages.

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 | txtai.me |
| Company | Startup from the United States · 2026 | 2025 |
| 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...
AIForMe is an AI assistant that works through ordinary text messages. Send a question to (979) 243-6763 and receive an AI-generated answer by SMS. There is no app to install, and your phone does not need mobile data or Wi-Fi—only cellular SMS service. Use AIForMe to: Ask general questions and get...
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The first SMS AI bot with infinite memory, search and more!
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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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ridiculously cheap bulk geocoding turn US street addresses into map coordinates and map coordinates into street addresses using our straightforward REST API
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