
Calendly
Acuity Scheduling
SimplyBook.me
Cal.com
When2Meet
Appointy
YouCanBookMe
Make meetings happen. With Doodle, scheduling becomes quick and easy.
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?
Based on our record, Doodle seems to be more popular. It has been mentioned 17 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 | doodle.com | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Doodle 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.

No analysis of Doodle yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Doodly Review | Animated Doodle Video Tutorial
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Doodle 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.

Doodle has some cool features, like letting you create meeting polls to send to clients and prospects, suggesting meeting dates and times, and allowing voting on dates that work — all with Doodle’s free version. In my...
Not only is it geared towards organizing schedules, but as a Doodle alternative, it also allows for the creation of scheduling patterns that work best for you. From the get-go, you can lay out your needs and...
Doodle is only one of several online scheduling software, and many consider it the best. Yet, Doodle is not the right solution for everyone. Analyzing Doodle’s online reviews reveals its weaknesses.
We have no reviews of ZIP Code API yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.

How's this different than the good old Doodle everyone uses in europe at least? https://doodle.com/en/. - Source: Hacker News / 11 months ago
I made this post a few months ago regarding how the extension was just disabled on a site I had accessed. I checked trusted sites, and there was nothing there. Today, I went onto a site called doodle, I'm sure many of you have used it or... Source: about 3 years ago
Can we set up a doodle poll so everyone can vote on the time that works for them? https://doodle.com/en/. Source: over 3 years ago
Tracking ZIP Code API since May 2026.
When comparing Doodle and ZIP Code API, you can also consider the following products.

Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
Compare Smarty to Doodle or ZIP Code API:

Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Compare Acuity Scheduling to Doodle or ZIP Code API:

Free Zip Code API - Free Postal Code Validation | Zipcodestack
Compare Zipcodestack to Doodle or ZIP Code API:

Online scheduling software that offers you a beautiful customisable booking website (or widget to your own website) to accept bookings and payments with the possibility of selling products as well.
Compare SimplyBook.me to Doodle or ZIP Code API:

The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to Doodle or ZIP Code API: