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

Cursor
Claude Code
warp by spolu
Codex 3.0 by OpenAI
opencode
GitHub Copilot
Windsurf Editor
Google Antigravity - Build the new way

Which is more popular?
Based on our record, Google Antigravity seems to be more popular. It has been mentioned 44 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 | antigravity.google |
| 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 Google Antigravity 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
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I Tried Google Antigravity So You Don't Have To!
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Share your experience with using ZIP Code API and Google Antigravity. 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.
I wired Antigravity directly into Android Studio — the agent working inside the IDE the app is built in, rather than me carrying changes back and forth. And what I found is that tweaking the app got much easier. Not marginally easier.... - Source: dev.to / 3 days ago
If you want to learn more about Antigravity, download it here: https://antigravity.google/. - Source: dev.to / 5 days ago
Then I open Antigravity and ask Gemini 3.8 Flash with high reasoning to turn the PRD into epics and child issues through the GitHub CLI. In my experience, this step has been accurate and inexpensive. I still check the backlog before... - Source: dev.to / 7 days ago
When comparing ZIP Code API and Google Antigravity, 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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The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Secure and simple terminal sharing
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