
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.

Auth0
Clerk
Frontegg
Descope
PropelAuth
Kinde
Amazon Cognito
Application and Data, Application Utilities, and User Management and Authentication

Which is more popular?
Based on our record, WorkOS seems to be more popular. It has been mentioned 19 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | postaldatapi.com | workos.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 WorkOS 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 WorkOS yet.
Walkthroughs and reviews on video.
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
More videos
Add SSO to your Next.js app using WorkOS in 7 minutes
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PostalDataPI and WorkOS. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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Just launched in 2018, and WorkOS is already well liked by many enterprises and IT developers. The all in one solution boasts Enterprise SSO and supports all OIDC and SAML providers right out of the box.
Recommendations tracked on public social media and blogs since March 2021.


Tracking PostalDataPI since Apr 2026.
On November 2nd, WorkOS disclosed that an attacker using the ARTEX offensive framework had accessed one of their internal sales tools. Rather than this originating from a state-sponsored attacker, a security researcher had come forward... - Source: dev.to / 3 days ago
WorkOS AuthKit is user management with a 1 million MAU free band, then $2,500/mo per extra million. Staging is free. Production AuthKit still requires a payment method on file even if you never cross 1M MAU. Hosted custom domain is... - Source: dev.to / about 1 month ago
Dr. Tobin South is no stranger to the overlapping worlds of AI research, security, and enterprise software. After a wild ride through MIT’s AI scene (and a ChatGPT moment that changed everything), Tobin plunged into the depths of... - Source: dev.to / about 1 year ago
When comparing PostalDataPI and WorkOS, 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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Auth0 is a program for people to get authentication and authorization services for their own business use.
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We help businesses improve UX and data quality with a cutting edge address validation service.
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Clerk.io, the artificial intelligence for e-commerce that knows your customers interests.
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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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Elegant user management, tailor-made for B2B SaaS
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