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

Chargebee
Maxio
Recurly
Stripe
SaaSOptics
Stripe Billing
fusebill
Zuora creates cloud-based software on a subscription basis that enables any company in any industry to successfully launch, manage, and transform into a subscription business.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|---|---|---|
| Website | zip-codes.com | zuora.com |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

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...
No description of Zuora yet.
What each product offers, as listed by its team.

Possible disadvantages
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Why this product is good
Recommended for
Overall verdict
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Zuora CEO: Subscription Economy for Manufacturers | Mad Money | CNBC
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If Recurly and Chargebee handle subscription management, Zuora approaches it as a complete business transformation. It’s what analysts call a “subscription economy” system. Zuora essentially becomes the financial core...
When comparing ZIP Code API and Zuora, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Chargify is the best online billing software for all of your Recurring Billing needs. Learn more about simplifying your Subscription Billing today.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Subscription billing and recurring billing management. Recurly offers enterprise-class subscription billing for thousands of companies worldwide.
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