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zrok
Instantly share your localhost environment!
Smarty
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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, localhost.run seems to be more popular. It has been mentioned 42 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 | localhost.run | zip-codes.com |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of localhost.run 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.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using localhost.run 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.

localhost.run is very similar to Serveo but with less features. In fact, as far as I can tell, it only does 1 thing: expose your local web server to the web with a public URL. And it does that well enough for me.
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.

- This asciinema: https://asciinema.org/a/674501?t=111 Any unix machine (currently only fedora and debian based distro dependencies are auto installed. Passwordless sudo recommended) with tmux if you run this ssh command you’ll get a... - Source: Hacker News / about 2 years ago
Localhost.run - Simple hosted SSH option. Supports custom domains for a cost. - Source: dev.to / over 2 years ago
Localhost.run — Expose locally running servers over a tunnel to a public URL. - Source: dev.to / over 2 years ago
Tracking ZIP Code API since May 2026.
When comparing localhost.run and ZIP Code API, you can also consider the following products.

ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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An open source serveo/ngrok alternative. HTTP(S)/WS(S)/TCP Tunnels to localhost using only SSH.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Public URLs for localhost without downloading any binary
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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