
Fast.com
Testmy.net
SpeedOf.Me
Speed Test by Cloudflare
OpenSpeedTest
LibreSpeed
nPerf
Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla
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, Speedtest.net seems to be more popular. It has been mentioned 2939 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 | speedtest.net | zip-codes.com |
| Company | Startup from the United States | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Speedtest.net 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
Individuals who want to check their internet speed quickly and easily, IT professionals who need to diagnose network issues, developers who require speed testing integration into their applications, and businesses that need consistent and reliable network performance assessment.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Speedtest.net 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.

Seems plenty fast enough to me. I have an old phone. I'm on one of the cheapest plans. I ran a speed test with https://speedtest.net and I got 124 megabits per second. That's 15 megabytes per second, 900 megabytes per minute, which is... - Source: Hacker News / about 1 month ago
Pro tip: Run a speed test immediately before the event. Don't trust your "up to 100 Mbps" ISP claim. Use fast.com or speedtest.net to get real numbers. - Source: dev.to / 8 months ago
For starters, disconnect all wireless devices (or just your wireless router if it’s separate from your modem). Hardwire your modem to a computer and use Ookla Speedtest instead of Spectrum’s. Source: almost 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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Accurately test your Internet connection speed with this powerful broadband speed test. Improve your bandwidth speed with the truth.
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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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