
ProtonVPN
Hotspot Shield
TunnelBear
NordVPN
ExpressVPN
Windscribe
Psiphon
OpenVPN - The Open Source VPN
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, OpenVPN seems to be more popular. It has been mentioned 40 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 | openvpn.net | zip-codes.com |
| Pricing | — | |
| 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 OpenVPN 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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Walkthroughs and reviews on video.
OpenVPN Overview
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using OpenVPN 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.

OpenVPN is an open-source software application that provides virtual private network (VPN) services. It allows the creation of secure network connections over the internet, using a custom security protocol that...
OpenVPN is a virtual private network system used to create trusted end-to-end connection configuration and remote access services. As with any other VPN service, OpenVPN also has its own drawbacks. For instance, its...
In most cases, OpenVPN or WireGuard will be your best bet. PPTP is a protocol we don’t recommend using because of its relatively low-level encryption. However, you could try this protocol when privacy and security are...
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.

OpenVPN is hiring! https://openvpn.net/ C++ Developer in the United States. Full-time| Fully remote| Flexible work schedules Link to look at vacancy details and apply:. - Source: Hacker News / about 3 years ago
How you connect to your modem will depend on the device you are using, but for windows laptops as an example you download the OpenVPN program and input your modem details there, much like you would any other vpn service. I think there... Source: over 3 years ago
I just started playing with CloudConnexa for remotely managing my second pFSense. Really nice and is free for up to 3 concurrent users. https://openvpn.net. Can also self-host OpenVPN access server with a free 2 concurrent license. Source: over 3 years ago
Tracking ZIP Code API since May 2026.
When comparing OpenVPN and ZIP Code API, you can also consider the following products.

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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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
Compare Smarty to OpenVPN or ZIP Code API:

Hotspot Shield is a software application developed by AnchorFree, Inc.
Compare Hotspot Shield to OpenVPN or ZIP Code API:

Free Zip Code API - Free Postal Code Validation | Zipcodestack
Compare Zipcodestack to OpenVPN or ZIP Code API:

Really simple VPN to browse the web privately & anonymously.
Compare TunnelBear to OpenVPN or ZIP Code API:

The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to OpenVPN or ZIP Code API: