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

Sublime Text
Eclipse IoT
UltraEdit
Netbeans
Adobe Dreamweaver
Notepad++
Aptana Studio
Microsoft Expression Web, part of Microsoft's Expression Studio, is an HTML editor and general...

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 | microsoft.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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We suppose we should not miss this member from Microsoft while checking out best alternatives for Dreamweaver. Expression Web 4.0 is a Windows-only tool for building web pages with ease through the direct code editor....
When comparing ZIP Code API and Microsoft Expression Web, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Eclipse IoT provides the technology needed to build IoT Devices, Gateways, and Cloud Platforms.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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UltraEdit is a commercially maintained editor built for critical work where performance, reliability, and security matter most.
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