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:key: Curated list of awesome captcha libraries and crack tools.
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Oct 04, 2023
Libraries
- patchca - Simple yet powerful CAPTCHA library written in Java.
Nov 30, 2021
Generation
- captcha-api - Free, fast and reliable Captcha API POWERED BY AI
May 17, 2020
Generation
- koto-bank/kocaptcha (⭐52) - 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 (⭐28) - A visual, click-based CAPTCHA for human authentication.
- ArgoZhang/SliderCaptcha (⭐234) - Slider captcha supporting mobile.
Other / Chinese
- Hashcash for PHP/JavaScript forms (⭐46) - An alternative to captcha to fight spam, based on proof-of-work.
Feb 22, 2019
Crack / General
- kerlomz/captcha_trainer (⭐2.8k) - Based on CNN5/DenseNet+BLSTM/LSTM+CTC to realize verification code identification. Only for training the model.
Feb 02, 2019
Libraries
- lorien/captcha_solver (⭐224) - Universal python API to different captcha solving services.
Dec 13, 2018
Crack / General
- dessant/buster (⭐6.4k) - Captcha solver extension for humans and monsters.
Dec 07, 2018
Crack / General
- arunpatala/captcha (⭐176) - Breaking captchas using torch.
- zakizhou/CAPTCHA (⭐67) - Implement classification for CAPTCHA in TensorFlow.
- nladuo/captcha-break (⭐711) - Captcha break based on opencv2, tesseract-ocr and some machine learning algorithm.
- ypwhs/captcha_break (⭐2.6k) - Captcha break using CNN with Keras.
- ptigas/simple-captcha-solver (⭐528) - Simple CAPTCHA solver in python 🐍.
- rickyhan/SimGAN-Captcha (⭐424) - Solve captcha without manually labeling a training set.
- arunpatala/captcha.irctc (⭐204) - Reading irctc captchas with 98% accuracy using deep learning.
- JackonYang/captcha-tensorflow (⭐930) - Image Captcha Solving Using TensorFlow and CNN Model.
- skyduy/CNN_keras (⭐280) - CNN | Keras | CAPTCHA recognition(卷积神经网络、Keras框架、验证码识别).
- PatrickLib/captcha_recognize (⭐536) - Image Recognition captcha without image segmentation.
- zhengwh/captcha-svm (⭐201) - Use svm to hack simple captcha.
- chxj1992/captcha_cracker (⭐167) - Crack captcha with CNN.
- chxj1992/slide_captcha_cracker (⭐134) - Crack solution for slide captcha with Canny algorithm.
- JasonLiTW/simple-railway-captcha-solver#english-version (⭐755) - Simple captcha solver based on CNN and a training set generator by imitating the style of captcha.
- lllcho/CAPTCHA-breaking (⭐225) - Breaking the captcha.
Crack / Chinese
- burness/chinese_hand_write_rec (⭐1.1k) - Handwritten chinese recognition.
- taosir/cnn_handwritten_chinese_recognition (⭐470) - As the name shows, handwritten_chinese_recognition with cnn.
- soloice/Chinese-Character-Recognition (⭐198) - This project shows how to use CNN to perform Chinese character recognition, a much more complicated task compared to MNIST digit recognition.
- muchrooms/zheye (⭐779) - Chinese captcha recognition program for handstand character of zhihu.
- aaronshan/12306-captcha (⭐274) - Recognize 12306 captcha with deep learning.
Nov 23, 2018
Generation
- dchest/captcha (⭐1.8k) - Go package captcha implements generation and verification of image and audio CAPTCHAs.
- lepture/captcha (⭐923) - A captcha library that generates audio and image CAPTCHAs.
- lemonce/svg-captcha (⭐1.8k) - Generate svg captcha in Node.js.
- DoubleSpout/ccap (⭐481) - Node.js generate captcha using c++ library CImg without install any other lib or software.
- contra/captchagen (⭐179) - Captcha generation for Node.js.
- jineshfrancs/CaptchaImageView (⭐611) - Custom ImageView to generate captcha image.
- mcxtzhang/SwipeCaptcha (⭐707) - Swipe captcha of Android platform.
- mojocn/base64Captcha (⭐1.9k) - Golang base64-captcha supports digits, numbers,alphabet, arithmetic, audio and digit-alphabet captcha.
Crack / Chinese
- nickliqian/cnn_captcha (⭐2.6k) - Use cnn recognize captcha by tensorflow.
Aug 23, 2018
Libraries
- mewebstudio/captcha (⭐2.3k) - Captcha for Laravel 5.
- CGregwar/Captcha (⭐1.6k) - PHP Captcha library.
- trekjs/captcha (⭐442) - A Lightweight Pure JavaScript Captcha for Node.js. No C/C++, No ImageMagick, No Canvas.
- google/recaptcha (⭐3.4k) - PHP client library for reCAPTCHA, a free service to protect your website from spam and abuse.
- ambethia/recaptcha (⭐1.9k) - ReCaptcha helpers for ruby apps.
- anhskohbo/no-captcha (⭐1.7k) - No CAPTCHA reCAPTCHA For Laravel.
Crack / General
- ecthros/uncaptcha (⭐2.8k) - Defeating Google's audio reCaptcha with 85% accuracy.
Jun 07, 2018
Tools / Chinese
- Tesseract (⭐54k) - Tesseract Open Source OCR Engine.
- Negative-captcha (⭐793) - A plugin to make the process of creating a negative captcha in Rails much less painful.
- Django-simple-captcha (⭐1.3k) - An extremely simple, yet highly customizable Django application to add captcha images to any Django form.
- Securimage (⭐559) - PHP CAPTCHA Script.
- Captcha_solver (⭐224) - Univeral API to captcha solving services.
Other / Chinese
- VisualCaptcha (⭐406) - A collection of all the different versions/repos of visualCaptcha.
Apr 12, 2018
Maintainers / Chinese
Feb 11, 2018
Tools / Chinese
- MotionCAPTCHA (⭐825) - MotionCAPTCHA jQuery Plugin - Stop Spam, Draw Shapes.