
LucidChart
draw.io
yEd
Sketch
Gliffy
Adobe Photoshop
Dia
OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.
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

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 | omnigroup.com | zip-codes.com |
| Company | Startup from the United States | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of OmniGraffle yet.
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...
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
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Walkthroughs and reviews on video.
OmniGraffle & OmniPlan Review (macOS)
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using OmniGraffle and ZIP Code API. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

OmniGraffle has a huge number of UML templates and mockups and even if you can’t find what you’re looking for, you probably will in the many community driven resources for OmniGraffle templates.
OmniGraffle 7 for Mac creates precise, beautiful graphics: website wireframes, electrical systems, family trees and maps of software classes. Everyone from professional artists and designers to casual data mappers and...
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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