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

Eagle App
Milanote
BeeRef
Miro
FrameRef
Kuadro
refern.
The simple way to view and organize your multiple reference images.
Which is more popular?
Based on our record, PureRef seems to be more popular. It has been mentioned 4 times since March 2021.
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 | pureref.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...
No description of PureRef yet.
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
No analysis of PureRef yet.
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The Best Free Tool for Artists - PureRef
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Share your experience with using ZIP Code API and PureRef. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
I mainly use offline means: organising all my files in a hierarchy of folders and using pureref (which I highly recommend) to make moodboards, and ofc an external hard drive to save backups. The only online means I use is google drive... Source: over 4 years ago
If you just want the image to be a transparent overlay while you draw 'through the image'(with it being unchanged) you can use something like Pureref(pureref.com) to set the image as always on top + turn opacity down a bit. Source: over 4 years ago
If you can’t get it to work inside of max, I thought of a free easy workaround you could try. I use the software pureref to manage and quickly access reference images. You could just resize an empty pureref window to cover your username.... Source: over 4 years ago
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Milanote is a note taking app for creative work.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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