
Fast.com
Speedtest.net
SpeedOf.Me
Testmy.net
nPerf
Speed Test by Cloudflare
speedtest-cli
Self-hosted Speedtest for HTML5. Easy setup, examples, configurable, mobile friendly.
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, LibreSpeed seems to be more popular. It has been mentioned 34 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 | github.com | zip-codes.com |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of LibreSpeed 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 LibreSpeed yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Self-host your own internet speed test with LibreSpeed!
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using LibreSpeed 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.

I run internetspeedtest.net, a free, no-signup speed test built on the open-source LibreSpeed engine. - Source: dev.to / about 2 months ago
Try hosting a DIY speed test on a cloud server (like Google colab or the free oracle instances or whatever): https://github.com/librespeed/speedtest. - Source: Hacker News / over 3 years ago
It should be DIA. They provide the internet connection to the company since 2 decades and it's a very small ISP, so it's very vague in terms of contract. Iperf was giving me very terrible results with TCP, UDP was giving me a couple of... Source: over 3 years ago
Tracking ZIP Code API since May 2026.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed!
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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