Awesome Captcha

Curated list of awesome captcha libraries and captcha crack tools.

CAPTCHA is a type of challenge–response test used in computing to determine whether or not the user is human.

English | 中文 | Polish

Contents

• Libraries
• Generation
• Crack
• General
• Chinese
• Tools
• Other
• Maintainers

Libraries

• mewebstudio/captcha - Captcha for Laravel 5.
• CGregwar/Captcha - PHP Captcha library.
• trekjs/captcha - A Lightweight Pure JavaScript Captcha for Node.js. No C/C++, No ImageMagick, No Canvas.
• patchca - Simple yet powerful CAPTCHA library written in Java.
• google/recaptcha - PHP client library for reCAPTCHA, a free service to protect your website from spam and abuse.
• ambethia/recaptcha - ReCaptcha helpers for ruby apps.
• anhskohbo/no-captcha - No CAPTCHA reCAPTCHA For Laravel.
• lorien/captcha_solver - Universal python API to different captcha solving services.

Generation

• captcha-api - Free, fast and reliable Captcha API POWERED BY AI
• dchest/captcha - Go package captcha implements generation and verification of image and audio CAPTCHAs.
• lepture/captcha - A captcha library that generates audio and image CAPTCHAs.
• lemonce/svg-captcha - Generate svg captcha in Node.js.
• DoubleSpout/ccap - Node.js generate captcha using c++ library CImg without install any other lib or software.
• contra/captchagen - Captcha generation for Node.js.
• jineshfrancs/CaptchaImageView - Custom ImageView to generate captcha image.
• mcxtzhang/SwipeCaptcha - Swipe captcha of Android platform.
• mojocn/base64Captcha - Golang base64-captcha supports digits, numbers,alphabet, arithmetic, audio and digit-alphabet captcha.
• koto-bank/kocaptcha - A simple captcha service with a single API endpoint, written in Rust.
• Captcheck - Lightweight, self-hostable CAPTCHA service written in PHP 7 and MySQL. Uses a selection of icons from Font-Awesome. Text-only accessibility mode and support for keyboard-only operation.
• Securimage - Open-source free PHP Captcha script.
• Lokno/click-captcha - A visual, click-based CAPTCHA for human authentication.
• ArgoZhang/SliderCaptcha - Slider captcha supporting mobile.

Crack

General

• arunpatala/captcha - Breaking captchas using torch.
• zakizhou/CAPTCHA - Implement classification for CAPTCHA in TensorFlow.
• nladuo/captcha-break - Captcha break based on opencv2, tesseract-ocr and some machine learning algorithm.
• ypwhs/captcha_break - Captcha break using CNN with Keras.
• ptigas/simple-captcha-solver - Simple CAPTCHA solver in python 🐍.
• rickyhan/SimGAN-Captcha - Solve captcha without manually labeling a training set.
• arunpatala/captcha.irctc - Reading irctc captchas with 98% accuracy using deep learning.
• JackonYang/captcha-tensorflow - Image Captcha Solving Using TensorFlow and CNN Model.
• skyduy/CNN_keras - CNN | Keras | CAPTCHA recognition（卷积神经网络、Keras框架、验证码识别）.
• PatrickLib/captcha_recognize - Image Recognition captcha without image segmentation.
• zhengwh/captcha-svm - Use svm to hack simple captcha.
• chxj1992/captcha_cracker - Crack captcha with CNN.
• chxj1992/slide_captcha_cracker - Crack solution for slide captcha with Canny algorithm.
• JasonLiTW/simple-railway-captcha-solver#english-version - Simple captcha solver based on CNN and a training set generator by imitating the style of captcha.