Provide check digit algorithms and calculators written in Go

A C# library for validating and generating credit card numbers.

Generation and verification of card numbers using Luhn's algorithm.

A Java library for generating mathematically-valid credit card numbers for software testing. The API provides customizable criteria for generation, and is extensible to apply to any payment card type which uses Luhn validation (not limited to just credit cards).

A .net library to identify credit card number and cvv

Python library to generate and validate credit card numbers. Features a fast, offline BIN lookup using a local database. Zero dependencies, no API keys needed. Perfect for generating test data.

🔒 An easy-to-use check digit library for data validation

This Python code scrapes Google search results then applies sentiment analysis, generates text summaries, and ranks keywords.

Minimal, zero-dependency implementation of the Luhn Algorithm for PHP.

Card & BIN Tester — a polished Flask app showcasing card generation, BIN lookup and live Stripe test validation. Clean UI, responsive design, and realtime progress reporting make it ideal for security students and devs who want to learn how payment validation works — strictly for legal and educational purposes.

A small guide on credit card security, and ways hackers exploit them

Fake credit card generator and validator. This is only meant for educational purpose.

Credit Card Checker And Generator Using Luhn Algorithm

Simple validator for identification numbers based on Luhn algorithm

PHP implementation of the Luhn algorithm.

A full TypeScript EAN, UPC, IMEI, EID, ISBN & card validation tool

Helper classes to calculate and validate ckecksums.

A better and safer way to display your primary keys in urls or in your app

Luhn (Modulo 10 or mod 10 algorithm) for PHP

Fastest JavaScript implementation of the Luhn algorithm

Pragmatic data validation

Contains helper classes that I find useful every now and then.

SIM card checksum and encoding utils for nibbling, mcc, mnc, etc.

A set of check digit algorithms implemented in Dart

Core library

🛠️ Validate and test credit cards effortlessly with our modern web app, featuring Stripe API integration and robust security measures.

Checks if a number is valid per the luhn algorithm

💳 Generate and validate credit card information easily with this professional tool designed for secure testing and development purposes.

Kata : implémenter la formule de Luhn pour vérifier des numéros de cartes bancaires

Luhn's Algorithm implementation in Nim