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--- visibility: public --- # Captcha **repo:** [ZYSzys/awesome-captcha](https://github.com/ZYSzys/awesome-captcha) **category:** [[miscellaneous|Miscellaneous]] --- # Awesome Captcha [](https://awesome.re) > Curated list of awesome captcha libraries and captcha crack tools. [CAPTCHA](https://en.wikipedia.org/wiki/CAPTCHA) is a type of challenge–response test used in computing to determine whether or not the user is human. [English](README.md) | [中文](README-zh.md) | [Polish](README-pl.md) ## Contents - [Libraries](#libraries) - [Generation](#generation) - [Crack](#crack) - [General](#general) - [Chinese](#chinese) - [Tools](#tools) - [Other](#other) - [Maintainers](#maintainers) ## Libraries - [mewebstudio/captcha](https://github.com/mewebstudio/captcha) - Captcha for [Laravel](/@harrisonqian/awesome/wiki/back-end-development/laravel) 5. - [CGregwar/Captcha](https://github.com/Gregwar/Captcha) - PHP Captcha library. - [trekjs/captcha](https://github.com/trekjs/captcha) - A Lightweight Pure [JavaScript](/@harrisonqian/awesome/wiki/programming-languages/javascript) Captcha for [Node.js](/@harrisonqian/awesome/wiki/platforms/node-js). No C/C++, No ImageMagick, No [Canvas](/@harrisonqian/awesome/wiki/front-end-development/canvas). - [patchca](https://code.google.com/archive/p/patchca) - Simple yet powerful CAPTCHA library written in [Java](/@harrisonqian/awesome/wiki/programming-languages/java). - [google/recaptcha](https://github.com/google/recaptcha) - PHP client library for reCAPTCHA, a free service to protect your website from spam and abuse. - [ambethia/recaptcha](https://github.com/ambethia/recaptcha) - ReCaptcha helpers for [ruby](/@harrisonqian/awesome/wiki/programming-languages/ruby) [apps](/@harrisonqian/awesome/wiki/platforms/apps). - [anhskohbo/no-captcha](https://github.com/anhskohbo/no-captcha) - No CAPTCHA reCAPTCHA For [Laravel](/@harrisonqian/awesome/wiki/back-end-development/laravel). - [lorien/captcha_solver](https://github.com/lorien/captcha_solver) - Universal [python](/@harrisonqian/awesome/wiki/programming-languages/python) API to different captcha solving services. ## Generation - [captcha-api](https://captcha-api.akshit.me) - Free, fast and reliable Captcha API POWERED BY AI - [dchest/captcha](https://github.com/dchest/captcha) - Go package captcha implements generation and verification of image and audio CAPTCHAs. - [lepture/captcha](https://github.com/lepture/captcha) - A captcha library that generates audio and image CAPTCHAs. - [lemonce/svg-captcha](https://github.com/lemonce/svg-captcha) - Generate svg captcha in [Node.js](/@harrisonqian/awesome/wiki/platforms/node-js). - [DoubleSpout/ccap](https://github.com/DoubleSpout/ccap) - [Node.js](/@harrisonqian/awesome/wiki/platforms/node-js) generate captcha using c++ library CImg without install any other lib or software. - [contra/captchagen](https://github.com/contra/captchagen) - Captcha generation for [Node.js](/@harrisonqian/awesome/wiki/platforms/node-js). - [jineshfrancs/CaptchaImageView](https://github.com/jineshfrancs/CaptchaImageView) - Custom ImageView to generate captcha image. - [mcxtzhang/SwipeCaptcha](https://github.com/mcxtzhang/SwipeCaptcha) - Swipe captcha of [Android](/@harrisonqian/awesome/wiki/platforms/android) platform. - [mojocn/base64Captcha](https://github.com/mojocn/base64Captcha) - Golang base64-captcha supports digits, numbers,alphabet, arithmetic, audio and digit-alphabet captcha. - [koto-bank/kocaptcha](https://github.com/koto-bank/kocaptcha) - A simple captcha service with a single API endpoint, written in [Rust](/@harrisonqian/awesome/wiki/programming-languages/rust). - [Captcheck](https://captcheck.netsyms.com) - Lightweight, self-hostable CAPTCHA service written in PHP 7 and [MySQL](/@harrisonqian/awesome/wiki/databases/mysql). Uses a selection of [icons](/@harrisonqian/awesome/wiki/media/icons) from Font-[Awesome](/@harrisonqian/awesome/wiki/miscellaneous/awesome). Text-only accessibility mode and support for keyboard-only operation. - [Securimage](https://www.phpcaptcha.org) - Open-source free PHP Captcha script. - [Lokno/click-captcha](https://github.com/Lokno/click-captcha) - A visual, click-based CAPTCHA for human authentication. - [ArgoZhang/SliderCaptcha](https://github.com/ArgoZhang/SliderCaptcha) - Slider captcha supporting mobile. ## Crack ### General - [arunpatala/captcha](https://github.com/arunpatala/captcha) - Breaking captchas using torch. - [zakizhou/CAPTCHA](https://github.com/zakizhou/CAPTCHA) - Implement classification for CAPTCHA in [TensorFlow](/@harrisonqian/awesome/wiki/computer-science/tensorflow). - [nladuo/captcha-break](https://github.com/nladuo/captcha-break) - Captcha break based on opencv2, tesseract-ocr and some [machine learning](/@harrisonqian/awesome/wiki/computer-science/machine-learning) algorithm. - [ypwhs/captcha_break](https://github.com/ypwhs/captcha_break) - Captcha break using CNN with Keras. - [ptigas/simple-captcha-solver](https://github.com/ptigas/simple-captcha-solver) - Simple CAPTCHA solver in [python](/@harrisonqian/awesome/wiki/programming-languages/python) 🐍. - [rickyhan/SimGAN-Captcha](https://github.com/rickyhan/SimGAN-Captcha) - Solve captcha without manually labeling a training set. - [arunpatala/captcha.irctc](https://github.com/arunpatala/captcha.irctc) - Reading irctc captchas with 98% accuracy using [deep learning](/@harrisonqian/awesome/wiki/computer-science/deep-learning). - [JackonYang/captcha-tensorflow](https://github.com/JackonYang/captcha-tensorflow) - Image Captcha Solving Using [TensorFlow](/@harrisonqian/awesome/wiki/computer-science/tensorflow) and CNN Model. - [skyduy/CNN_keras](https://github.com/skyduy/CNN_keras) - CNN | Keras | CAPTCHA recognition（卷积神经网络、Keras框架、验证码识别）. - [PatrickLib/captcha_recognize](https://github.com/PatrickLib/captcha_recognize) - Image Recognition captcha without image segmentation. - [zhengwh/captcha-svm](https://github.com/zhengwh/captcha-svm) - Use svm to hack simple captcha. - [chxj1992/captcha_cracker](https://github.com/chxj1992/captcha_cracker) - Crack captcha with CNN. - [chxj1992/slide_captcha_cracker](https://github.com/chxj1992/slide_captcha_cracker) - Crack solution for slide captcha with Canny algorithm. - [JasonLiTW/simple-railway-captcha-solver#english-version](https://github.com/JasonLiTW/simple-railway-captcha-solver#english-version) - Simple captcha solver based on CNN and a training set generator by imitating the style of captcha. - [lllcho/CAPTCHA-breaking](https://github.com/lllcho/CAPTCHA-breaking) - Breaking the captcha. - [ecthros/uncaptcha](https://github.com/ecthros/uncaptcha) - Defeating Google's audio reCaptcha with 85% accuracy. - [dessant/buster](https://github.com/dessant/buster) - Captcha solver extension for humans and monsters. - [kerlomz/captcha_trainer](https://github.com/kerlomz/captcha_trainer) - Based on CNN5/DenseNet+BLSTM/LSTM+CTC to realize verification code identification. Only for training the model. ### Chinese - [burness/chinese_hand_write_rec](https://github.com/burness/tensorflow-101/tree/master/chinese_hand_write_rec/src) - Handwritten chinese recognition. - [taosir/cnn_handwritten_chinese_recognition](https://github.com/taosir/cnn_handwritten_chinese_recognition) - As the name shows, handwritten_chinese_recognition with cnn. - [soloice/Chinese-Character-Recognition](https://github.com/soloice/Chinese-Character-Recognition) - This project shows how to use CNN to perform Chinese character recognition, a much more complicated task compared to MNIST digit recognition. - [muchrooms/zheye](https://github.com/muchrooms/zheye) - Chinese captcha recognition program for handstand character of zhihu. - [aaronshan/12306-captcha](https://github.com/aaronshan/12306-captcha) - Recognize 12306 captcha with [deep learning](/@harrisonqian/awesome/wiki/computer-science/deep-learning). - [nickliqian/cnn_captcha](https://github.com/nickliqian/cnn_captcha) - Use cnn recognize captcha by [tensorflow](/@harrisonqian/awesome/wiki/computer-science/tensorflow). ## Tools - [Tesseract](https://github.com/tesseract-ocr/tesseract) - Tesseract Open Source OCR Engine. - [MotionCAPTCHA](https://github.com/wjcrowcroft/MotionCAPTCHA) - MotionCAPTCHA [jQuery](/@harrisonqian/awesome/wiki/front-end-development/jquery) Plugin - Stop Spam, Draw Shapes. - [Negative-captcha](https://github.com/subwindow/negative-captcha) - A plugin to make the process of creating a negative captcha in [Rails](/@harrisonqian/awesome/wiki/back-end-development/rails) much [less](/@harrisonqian/awesome/wiki/front-end-development/less) painful. - [Django-simple-captcha](https://github.com/mbi/django-simple-captcha) - An extremely simple, yet highly customizable Django application to add captcha images to any Django form. - [Securimage](https://github.com/dapphp/securimage) - PHP CAPTCHA Script. - [Captcha_solver](https://github.com/lorien/captcha_solver) - Univeral API to captcha solving services. ## Other - [VisualCaptcha](https://github.com/emotionLoop/visualCaptcha) - A collection of all the different versions/repos of visualCaptcha. - [Hashcash for PHP/JavaScript forms](https://github.com/007/hashcash-js) - An alternative to captcha to fight spam, based on proof-of-work. ## Maintainers - [@ZYSzys](https://github.com/ZYSzys) ## Contribute Please do! Check out the [contributing.md](contributing.md) file, or [open an issue](https://github.com/ZYSzys/awesome-captcha/issues/new)! ## License [](https://creativecommons.org/publicdomain/zero/1.0/) To the extent possible under law, [ZYSzys](https://github.com/ZYSzys) has waived all copyright and related or neighboring rights to this work.