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

ioBroker
Google Home
Home-Assistant.io
Domoticz
openHAB
Nim Home Assistant (NimHA)
My Devices
Securely control all your HomeKit accessories from your favorite iOS device.

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 | apple.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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flexible and modular application for the IoT and Smarthome
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Home Assistant is an open-source home automation platform running on Python 3.
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