Ideal postcodes
Postio.co.uk
USZipLookup
Zipcodestack
Fetchify
Data8 UK
Geocode.xyz
Postal code lookup API and downloadable country datasets for address validation, checkout, logistics and geocoding workflows.

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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PostalCodes.info
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| Website | postalcodes.info | workos.com |
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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.
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Add SSO to your Next.js app using WorkOS in 7 minutes
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using PostalCodes.info 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 PostalCodes.info since May 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
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Clerk.io, the artificial intelligence for e-commerce that knows your customers interests.
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Find any US ZIP code or Canadian postal code instantly. Search by city, address or code - get accurate location, county & population data free.
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