
Abstract APIs
Numverify
GlobalEntity API
mailboxlayer API
IBAN.com
VAT-calc.net
Melissa Data Quality
A powerful REST API for validating emails, IBANs, BIC/SWIFT codes, LEI, ISIN, credit cards, VAT numbers, phone numbers, and 70+ more validators. Free tier available.

AWS Lambda
Postman
Apigee
Amazon S3
RapidAPI for Mac
Django REST framework
MuleSoft Anypoint Platform
Create, publish, maintain, monitor, and secure APIs at any scale
Which is more popular?
Based on our record, Amazon API Gateway seems to be more popular. It has been mentioned 115 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | isvalid.dev | aws.amazon.com |
| Pricing | — | |
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


IsValid is a validation API service for developers who need to quickly verify data formats without building their own validators. It offers 40+ endpoints covering financial identifiers (IBAN, BIC, ISIN, CUSIP), international standards (ISBN, ISSN), technology formats (UUID, JWT, QR codes),...
No description of Amazon API Gateway 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
Overall verdict
Why this product is good
Recommended for
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing IsValid.dev and Amazon API Gateway.
IsValid.dev's answer
IsValid offers 70+ validators in a single API — covering financial identifiers (IBAN, BIC, ISIN, LEI), international standards (ISBN, ISSN), technology formats (UUID, JWT, QR codes), tax numbers (VAT, REGON, PESEL), credit cards, phone numbers, and more. No need to integrate multiple services for different data types.
IsValid.dev's answer
Most validation APIs focus on one category (email or phone). IsValid covers financial, regional, and technical formats all in one place with a consistent REST API. The free tier with 100 calls/day requires no credit card, and integration takes minutes.
IsValid.dev's answer
Developers and software teams building applications that handle user input, financial data, or international identifiers — particularly in fintech, e-commerce, and SaaS products.
IsValid.dev's answer
IsValid was built out of frustration with piecing together multiple validation libraries and services. The goal was a single, reliable API that handles the full range of data validation needs developers encounter in real-world applications.
IsValid.dev's answer
Next.js, Fastify, PostgreSQL, Docker
Share your experience with using IsValid.dev and Amazon API Gateway. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking IsValid.dev since Apr 2026.
I can generate multiple API endpoints from a single definition by attaching an Amazon API Gateway event source inside the loop:. - Source: dev.to / 5 months ago
API Patterns: REST (Amazon API Gateway), GraphQL (AWS AppSync with real-time subscriptions), WebSockets for streaming. - Source: dev.to / 5 months ago
AWS API Gateway is a managed HTTP/REST service provided by AWS. It provides a relatively simple way to host an API and offers rich functionality when it comes to customizability, security and integration. AWS API Gateway enforces a... - Source: dev.to / 6 months ago
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