awesome-captcha 
 CAPTCHA toolkit
 Curated list of CAPTCHA libraries and tools for generating and solving image-based security challenges.
 Curated list of awesome captcha libraries and crack tools.
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Language: JavaScript 
last commit: over 1 year ago 
Linked from   4 awesome lists  
  awesomeawesome-listcaptchacaptcha-breakcaptcha-breakingcaptcha-generatorcaptcha-imagecaptcha-librarycaptcha-solvercaptcha-solvingcrack-captchaimage-captcha 
  Awesome Captcha / Libraries |  |||
| mewebstudio/captcha | 2,477 | 12 months ago | Captcha for Laravel 5 | 
| CGregwar/Captcha | 1,734 | over 1 year ago | PHP Captcha library | 
| trekjs/captcha | 465 | over 1 year ago | 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 | 3,488 | over 1 year ago | PHP client library for reCAPTCHA, a free service to protect your website from spam and abuse | 
| ambethia/recaptcha | 1,976 | 11 months ago | ReCaptcha helpers for ruby apps | 
| anhskohbo/no-captcha | 1,788 | over 1 year ago | No CAPTCHA reCAPTCHA For Laravel | 
| lorien/captcha_solver | 244 | over 2 years ago | Universal python API to different captcha solving services | 
 Awesome Captcha / Generation |  |||
| captcha-api | Free, fast and reliable Captcha API POWERED BY AI | ||
| dchest/captcha | 1,946 | 11 months ago | Go package captcha implements generation and verification of image and audio CAPTCHAs | 
| lepture/captcha | 1,023 | over 1 year ago | A captcha library that generates audio and image CAPTCHAs | 
| lemonce/svg-captcha | 1,869 | over 1 year ago | Generate svg captcha in Node.js | 
| DoubleSpout/ccap | 480 | over 3 years ago | Node.js generate captcha using c++ library CImg without install any other lib or software | 
| contra/captchagen | 183 | almost 7 years ago | Captcha generation for Node.js | 
| jineshfrancs/CaptchaImageView | 612 | almost 8 years ago | Custom ImageView to generate captcha image | 
| mcxtzhang/SwipeCaptcha | 711 | over 6 years ago | Swipe captcha of Android platform | 
| mojocn/base64Captcha | 2,155 | over 1 year ago | Golang base64-captcha supports digits, numbers,alphabet, arithmetic, audio and digit-alphabet captcha | 
| koto-bank/kocaptcha | 58 | over 5 years ago | 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 | 30 | about 6 years ago | A visual, click-based CAPTCHA for human authentication | 
| ArgoZhang/SliderCaptcha | 272 | about 2 years ago | Slider captcha supporting mobile | 
 Awesome Captcha / Crack / General |  |||
| arunpatala/captcha | 181 | almost 10 years ago | Breaking captchas using torch | 
| zakizhou/CAPTCHA | 68 | almost 8 years ago | Implement classification for CAPTCHA in TensorFlow | 
| nladuo/captcha-break | 725 | almost 7 years ago | Captcha break based on opencv2, tesseract-ocr and some machine learning algorithm | 
| ypwhs/captcha_break | 2,738 | over 3 years ago | Captcha break using CNN with Keras | 
| ptigas/simple-captcha-solver | 556 | almost 8 years ago | Simple CAPTCHA solver in python 🐍 | 
| rickyhan/SimGAN-Captcha | 434 | over 1 year ago | Solve captcha without manually labeling a training set | 
| arunpatala/captcha.irctc | 212 | about 5 years ago | Reading irctc captchas with 98% accuracy using deep learning | 
| JackonYang/captcha-tensorflow | 998 | over 2 years ago | Image Captcha Solving Using TensorFlow and CNN Model | 
| skyduy/CNN_keras | 287 | almost 6 years ago | CNN | Keras | CAPTCHA recognition(卷积神经网络、Keras框架、验证码识别) | 
| PatrickLib/captcha_recognize | 558 | over 2 years ago | Image Recognition captcha without image segmentation | 
| zhengwh/captcha-svm | 206 | about 8 years ago | Use svm to hack simple captcha | 
| chxj1992/captcha_cracker | 189 | almost 3 years ago | Crack captcha with CNN | 
| chxj1992/slide_captcha_cracker | 142 | over 8 years ago | Crack solution for slide captcha with Canny algorithm | 
| JasonLiTW/simple-railway-captcha-solver#english-version | 809 | almost 3 years ago | Simple captcha solver based on CNN and a training set generator by imitating the style of captcha | 
| lllcho/CAPTCHA-breaking | 224 | over 9 years ago | Breaking the captcha | 
| ecthros/uncaptcha | 2,800 | almost 8 years ago | Defeating Google's audio reCaptcha with 85% accuracy | 
| dessant/buster | 8,097 | over 1 year ago | Captcha solver extension for humans and monsters | 
| kerlomz/captcha_trainer | 3,043 | about 3 years ago | Based on CNN5/DenseNet+BLSTM/LSTM+CTC to realize verification code identification. Only for training the model | 
 Awesome Captcha / Crack / Chinese |  |||
| burness/chinese_hand_write_rec | 1,113 | over 6 years ago | Handwritten chinese recognition | 
| taosir/cnn_handwritten_chinese_recognition | 511 | about 3 years ago | As the name shows, handwritten_chinese_recognition with cnn | 
| soloice/Chinese-Character-Recognition | 200 | over 8 years ago | This project shows how to use CNN to perform Chinese character recognition, a much more complicated task compared to MNIST digit recognition | 
| muchrooms/zheye | 800 | about 2 years ago | Chinese captcha recognition program for handstand character of zhihu | 
| aaronshan/12306-captcha | 281 | about 6 years ago | Recognize 12306 captcha with deep learning | 
| nickliqian/cnn_captcha | 2,791 | almost 3 years ago | Use cnn recognize captcha by tensorflow | 
 Awesome Captcha / Tools |  |||
| Tesseract | 63,142 | 11 months ago | Tesseract Open Source OCR Engine | 
| MotionCAPTCHA | 823 | about 14 years ago | MotionCAPTCHA jQuery Plugin - Stop Spam, Draw Shapes | 
| Negative-captcha | 789 | over 2 years ago | A plugin to make the process of creating a negative captcha in Rails much less painful | 
| Django-simple-captcha | 1,388 | 11 months ago | An extremely simple, yet highly customizable Django application to add captcha images to any Django form | 
| Securimage | 568 | over 2 years ago | PHP CAPTCHA Script | 
| Captcha_solver | 244 | over 2 years ago | Univeral API to captcha solving services | 
 Awesome Captcha / Other |  |||
| VisualCaptcha | 407 | over 4 years ago | A collection of all the different versions/repos of visualCaptcha | 
| Hashcash for PHP/JavaScript forms | 53 | almost 15 years ago | An alternative to captcha to fight spam, based on proof-of-work | 
 Awesome Captcha / Maintainers |  |||
| @ZYSzys | |||
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