
DuD-Poll
Doodle
Framadate
Smart Scheduling
Fasterplan
FreeBu
CozyCal
FullCalendar is an open-source JavaScript event calendar.
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, FullCalendar seems to be more popular. It has been mentioned 16 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 | fullcalendar.io | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of FullCalendar 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 FullCalendar yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Episode #042 - FullCalendar Events and Scheduling
No ZIP Code API videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using FullCalendar and ZIP Code API. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

There are dozens of open source Google calendar clones in JS; picking a random not-react example off of the front page of an npm search: https://fullcalendar.io/. - Source: Hacker News / 12 months ago
FullCalendar is an exhaustive calendar library offering extensive customization options. It supports features like dragging, resizing, and event handling, making it ideal for scheduling applications. - Source: dev.to / over 2 years ago
The only complexity with Temporal is the size of the polyfill. However, an alternative polyfill has been in development for some time now — temporal-polyfill by FullCalendar. Its size is much more appealing: 60.7 kB to 21.7 kB (gzip).... - Source: dev.to / over 2 years ago
Tracking ZIP Code API since May 2026.
When comparing FullCalendar and ZIP Code API, you can also consider the following products.

Dudle is an online scheduling application, which is free and open source.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Make meetings happen. With Doodle, scheduling becomes quick and easy.
Compare Doodle to FullCalendar or ZIP Code API:

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


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