
Postio.co.uk
Ideal postcodes
Fetchify
Smarty
Data8 UK
ZIP Code API
Data8 UK PredictiveAddress
The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

GNUnet
Yggdrasil
I2P
Freenet
Tor Browser
Qaul
LibreMesh
Cjdns is a networking protocol and reference implementation, founded on the ideology that networks...

Which is more popular?
Based on our record, cjdns seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | postaldatapi.com | github.com |
| Pricing | — | |
| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate — $0.000028 per query with no tiers or subscriptions. What you get back: Up to 18 metadata fields per postal code — city, state/region, coordinates,...
No description of cjdns yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of cjdns yet.
Walkthroughs and reviews on video.
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
More videos
Peer to peer IPv6 networking in cjdns + Slides - BattleMeshV8
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PostalDataPI and cjdns. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking PostalDataPI since Apr 2026.
Everyone is commenting on the HN headline, no one on the actual announcement: > Building the New Internet (Insert mandatory reference to Silicon Valley here :)) > We think there’s a better way forward. We're calling it identity-first... - Source: Hacker News / over 1 year ago
This sub is not about TOR and all the seediness that goes on there but rather about creating darknets, by which we/they mean mesh networks and encrypted networks using tools like https://github.com/cjdelisle/cjdns/. Source: over 3 years ago
One of my favorite projects in IPv6 space is the CJDNS project: LINK TO GITHUB. Source: over 3 years ago
When comparing PostalDataPI and cjdns, you can also consider the following products.

Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
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GNUnet is a framework for secure peer-to-peer networking that does not use any centralized or...
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We help businesses improve UX and data quality with a cutting edge address validation service.
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A proof-of-concept scalable IPv6 meshnet, featuring end-to-end encryption, a unique spanning tree...
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Fetchify delivers fast, accurate address, email, phone and bank validation tools that help businesses capture clean, verified customer data, reduce failed deliveries and improve checkout experiences worldwide.
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The I2P network provides strong privacy protections for communication over the Internet.
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