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

ProtonVPN
Windscribe
Hotspot Shield
OpenVPN
TunnelBear
NordVPN
Mullvad
Psiphon is circumvention software for Windows and Mobile platforms that provides uncensored access to Internet content. Read more about Psiphon.

Which is more popular?
Based on our record, Psiphon seems to be more popular. It has been mentioned 28 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 | psiphon.ca |
| 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 Psiphon yet.
What each product offers, as listed by its team.

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Why this product is good
Recommended for
Overall verdict
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Psiphon 3 Review!
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Psiphon is free and open-source software that is compatible with Windows, iOS, and Android devices.
Why, when Psiphon is already deemed as one of the best VPNs out there, would you want to look for alternatives? There could honestly be a million reasons why you might not be satisfied with a specific service but when...
If we talk about the features, Psiphon Pro has a global network featuring thousands of servers and diverse entry points. You don’t need to register any account or link your debit card; just download the app, and you...
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
I would recommend Psiphon [1,2] most (all?) of their code is open source and their main goal is to get around censorship blocks. They do have some crypto side projects but the main product is very solid. [1] https://psiphon.ca/. - Source: Hacker News / about 1 year ago
These should be able bypass FortiGuard. Speeds will be slow though. 1. Psiphon. 2. Your Freedom VPN. 3. Puffin Browser. Source: almost 3 years ago
Psiphon should work and it is free but they have limits on speed. Source: over 3 years ago
When comparing ZIP Code API and Psiphon, 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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ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Windscribe is a desktop application and browser extension that work together to block ads and trackers, restore access to blocked content and help you safeguard your privacy online.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Hotspot Shield is a software application developed by AnchorFree, Inc.
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