
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.

GlobalEntity API
DORApp automates DORA compliance by generating XBRL reports, minimizing errors and effort. Designed for financial entities, its intuitive interface simplifies data entry, while public data enrichment (LEI) enhances accuracy.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | isvalid.dev | dorapp.eu |
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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),...
DORApp is a compliance-driven SaaS solution designed to help financial institutions manage ICT third-party providers while meeting the Digital Operational Resilience Act (DORA) requirements. The platform automates XBRL report generation, monitors ICT vendor risk, and simplifies regulatory...
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
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing IsValid.dev and DORApp.
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 DORApp. For example, how are they different and which one is better?
When comparing IsValid.dev and DORApp, you can also consider the following products.

Simple, powerful APIs for everyday dev tasks
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Official company data from 50+ European business registers plus GLEIF LEI — one REST API for KYB, compliance and firmographic enrichment
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Mailboxlayer is a free, simple and powerful JSON API offering instant email address validation & verification via syntax checks, typo and spelling checks, SMTP checks, free and disposable provider filtering, and much more.
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IBAN checker is a software designed to validate an International Bank Account Number and identify the bank owning this account, BIC code and address.
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VAT calculator is an online utility web application that allows users to add or remove value-added tax from any amount.
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