
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.

Amazon Machine Learning
Lobe
Apple Machine Learning Journal
Best of Machine Learning
mlblocks
ML Showcase
ML5.js
Breathtaking visuals for learning ML techniques.

Which is more popular?
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | isvalid.dev | ml-playground.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 Machine Learning Playground 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
Walkthroughs and reviews on video.
No IsValid.dev videos yet. You could help us improve this page by suggesting one.
Machine Learning Playground Demo
How often each product is chosen within a category, 0–100% relative to the other.


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

Simple, powerful APIs for everyday dev tasks
Compare Abstract APIs to IsValid.dev or Machine Learning Playground:

Machine learning made easy for developers of any skill level
Compare Amazon Machine Learning to IsValid.dev or Machine Learning Playground:

Global phone number validation and lookup API
Compare Numverify to IsValid.dev or Machine Learning Playground:

Visual tool for building custom deep learning models
Compare Lobe to IsValid.dev or Machine Learning Playground:

Official company data from 50+ European business registers plus GLEIF LEI — one REST API for KYB, compliance and firmographic enrichment
Compare GlobalEntity API to IsValid.dev or Machine Learning Playground:

A blog written by Apple engineers
Compare Apple Machine Learning Journal to IsValid.dev or Machine Learning Playground: