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

GitHub
GitLab
BitBucket
openDesktop.org
Gitea
Launchpad.net
OSOR
The Complete Open-Source and Business Software Platform.

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 | sourceforge.net |
| 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...
No description of SourceForge yet.
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Presearch Privacy Review #27 - Sourceforge
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Share your experience with using ZIP Code API and SourceForge. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

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SourceForge is a great place for people who like open-source software. It offers a strong platform where you can find, review, and handle software, all while helping the open-source community.
SourceForge’s user interface works fine, but it could do with a modern overhaul to make it easier on the eye and give it a more intuitive feel. While it has a large community, SourceForge’s support is not as extensive...
Sourceforge has been around longer than most, and it has the projects to prove it. Lots of open source Linux, Windows and Mac projects are hosted on SF. It has a totally different project structure when compared with...
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Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
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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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Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
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