
ClearVPN
AdGuard VPN
TailScale
CyberGhost
Netmaker
Private Internet Access
VPN Unlimited
Secure, private & fast VPN with one-tap protection and a strict no-logs policy.
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?
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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| Website | cometvpn.com | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

CometVPN protects your privacy and keeps your internet traffic secure with strong AES-256 encryption. Whether you're browsing at home, streaming on the go, or connecting from public WiFi, CometVPN delivers fast, private, and unlimited VPN access with a single tap. Your Privacy, Our Priority...
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.

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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Private networks made easy Connect all your devices using WireGuard, without the hassle. Tailscale makes it as easy as installing an app and signing in.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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