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

TaskBoard
Pintask
LeanKit by Planview
buckets.co
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winio
Kefez
Codecks is a project management tool inspired by Collectible Card Games.
Which is more popular?
Based on our record, Codecks 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 | codecks.io |
| Pricing | — | |
| 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 Codecks yet.
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Codecks -- Game Development Project Management Tool
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Share your experience with using ZIP Code API and Codecks. 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.
This is where I recommend https://codecks.io/ my beloved :) Though I suppose something like Notion could also work. Source: over 3 years ago
I've become a fan of codecks. It's made by the devs behind Curious Expedition and although the principles are simple, the tool is mighty. You can use it with the desired complexity, but the main concept is simple, easy to grasp and works... Source: almost 5 years ago
You could check out codecks.io. There are many advanced features but the interface is very easy to use. I'm using it for game jams and it's a very pleasant experience! Also it's free for 1-3 users. Source: almost 5 years ago
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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See how Planview LeanKit enables engineering teams across all levels of the organization with a visual work delivery tool to apply Lean management principles to their work, helping them work smarter and deliver faster.
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