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

Magnet Window Manager
Moom
yabai
BTT Remote
Homebrew
AppCleaner
Mizage Divvy
Window management app based on Spectacle, written in Swift.

Which is more popular?
Based on our record, Rectangle seems to be more popular. It has been mentioned 480 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 | rectangleapp.com |
| 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 Rectangle 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
Overall verdict
Why this product is good
Recommended for
Rectangle is recommended for macOS users looking for a straightforward, lightweight solution to manage application windows. It is particularly beneficial for those who frequently work with multiple applications at once, including developers, designers, and anyone who values a tidy and organized desktop environment.
Walkthroughs and reviews on video.
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SKYWALKER RECTANGLE TRAMPOLINE REVIEW!!!
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and Rectangle. 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
Rectangle shows that you don’t need to dip into your bank account to get window resizer tools. This free Mac window manager lets you manage multiple windows using keyboard shortcuts, menu options, or by dragging and...
Most window manager apps for Mac support multiple monitors. They can help you move windows between screens and create custom layouts for each monitor. Many window manager apps – such as BetterSnapTool, Magnet, and...
However, it might take some time for you to get used to the shortcuts in the Rectangle app since there are many. Furthermore, you can also add some of your apps to exceptions if you want to keep them away from...
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Rectangle solved my macos window management annoyances. https://rectangleapp.com/ Not involved in dev of this, just a happy user. - Source: Hacker News / 2 months ago
As a both old Linux and now decade user of MacOS, after I got used to no middle-click paste and no focus-follows-mouse: 1. Keyboard shortcuts are Emacs, Ctrl-A: start of line, E: end of line, K: kill selected or to end of line, Y to... - Source: Hacker News / 6 months ago
Every macOS user uses Rectangle.app — https://rectangleapp.com The ones who don't use it is because they don’t know it exists. - Source: Hacker News / 7 months ago
When comparing ZIP Code API and Rectangle, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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A tiling window manager for macOS based on binary space partitioning
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