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

FlightGear
Birds of Steel
Ace Combat 6: Fire of Liberation
Orbiter
Digital Combat Simulator
Microsoft Flight Simulator X
IL-2 Sturmovik: 1946
The world's most advanced flight simulator just got an upgrade. Download the free demo today for Windows, macOS, & Linux.

Which is more popular?
Based on our record, X-Plane seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
ZIP
ZIP Code API
|
|
|
|---|---|---|
| Website | zip-codes.com | x-plane.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 X-Plane 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
No analysis of X-Plane yet.
Walkthroughs and reviews on video.
No ZIP Code API videos yet. You could help us improve this page by suggesting one.
Is X-Plane 11 Worth It In 2020? [X-Plane 11 Review]
More videos
How often each product is chosen within a category, 0–100% relative to the other.

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

We have no reviews of ZIP Code API yet. Be the first one to post
X-Plane and FlightGear are easily the most realistic but also the most complex. X-Plane costs $59.99 whereas FlightGear is free but X-Plane is more polished and easier to get going with than FlightGear.
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Oh, Thanks ! I wasn't expecting to be able to download on the WayBackMachine I tried on the old x-plane.com website with no success but it worked on boostair.com ! Source: about 4 years ago
Haha, yes I know I can just buy it from x-plane.com, but I was just wondering what the community had to say. Source: about 4 years ago
Has anybody gotten the "transaction failed (error 47)" message when trying to check out on x-plane.com? I've been trying to buy XP12 and I repeatedly get hit with this message :(. Source: about 4 years ago
When comparing ZIP Code API and X-Plane, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
Compare Smarty to ZIP Code API or X-Plane:

The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. It also simulates space flight in Earth's orbit. It's flight dynamics engine (JSBSim) is used in a 2015 NASA benchmark.
Compare FlightGear to ZIP Code API or X-Plane:

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

Birds of Steel is developed by Gaijin Entertainment for PlayStation and Xbox.
Compare Birds of Steel to ZIP Code API or X-Plane:

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

Ace Combat 6: Fire of Liberation is an Action, Single and Multiplayer Flight Simulation developed by Project Aces and published by Namco Bandai Games.
Compare Ace Combat 6: Fire of Liberation to ZIP Code API or X-Plane: