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

Coolors.co
Adobe Color CC
Color Hunt
Colormind
Color Palette Generator
Khroma Colors
iWantHue
Color Scheme Designer

Which is more popular?
Based on our record, Paletton seems to be more popular. It has been mentioned 55 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 | paletton.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 Paletton 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
Overall verdict
Why this product is good
Recommended for
Graphic designers, web designers, artists, and anyone involved in visual media who require a tool for generating and experimenting with color palettes. It’s especially beneficial for those needing to understand the relationships between colors and their impact on design.
Walkthroughs and reviews on video.
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Website Design Color Scheme with Paletton.com
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and Paletton. 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.
Paletton: A robust tool for creating color schemes based on color theory. It provides you with a color wheel, preview modes, harmony rules, and an accessibility simulation. - Source: dev.to / over 1 year ago
If you have an issue with say a blue which is too light you can usually darken it, whilst still keeping the overall colour pallet. This won't work with colours like green, orange or gold as they don't darken nicely. There are a number... - Source: dev.to / over 2 years ago
My go-to color links (general color theory stuff): - https://paletton.com/ palettes with color theory and can generate the entire scheme. - https://medialab.github.io/iwanthue/ I want hue, uses k-means to separate out colors, great for... - Source: Hacker News / over 2 years ago
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Generates color themes that can inspire any project.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Curated collection of beautiful colors, updated daily
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