
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.

GitBook
Docusaurus
ReadMe
Archbee.io
Slite
Swimm
DocuWriter.ai
The AI-powered documentation writer. It's documentation that just appears as you build

Which is more popular?
Based on our record, Mintlify seems to be more popular. It has been mentioned 25 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | postaldatapi.com | mintlify.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 Mintlify 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 Mintlify yet.
Walkthroughs and reviews on video.
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PostalDataPI and Mintlify. 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.
CIs like GitHub Actions provide a practical automation layer for teams that treat knowledge management as code. A workflow triggered on a schedule can query the KB's article index, cross-reference it against the last 30 days of ticket... - Source: dev.to / 6 months ago
In this comparison, we examine four leading platforms: Theneo's AI-first approach with complete developer portals, Redocly's spec-governance excellence, ReadMe's content-centric hubs, and Mintlify's beautiful Git-native design. We'll... - Source: dev.to / 10 months ago
Let me be upfront: I didn't choose Mintlify. When I joined my current company as the first and only technical writer, the platform had already been selected. The documentation needed a complete overhaul, and Mintlify was what I had to... - Source: dev.to / 10 months ago
When comparing PostalDataPI and Mintlify, 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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Modern Publishing, Simply taking your books from ideas to finished, polished books.
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We help businesses improve UX and data quality with a cutting edge address validation service.
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Easy to maintain open source documentation websites
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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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A collaborative developer hub for your API or code.
Compare ReadMe to PostalDataPI or Mintlify: