Top 20 NuGet captcha Packages

Project to simplify ReCaptcha use with Support PROXY, ASP.NET MVC. All Languages supported. Readme on Github.
DNTCaptcha.Core is a captcha generator and validator for ASP.NET Core applications.
BotDetect CAPTCHA Generator protects ASP.NET/Core forms from spam postings. The Captcha protection is available on .NET/Core for jQuery, Angular & React frontends and ASP.NET MVC1-6, WebForms & WebPages backends. It works in China; doesn't stalk; nor does it slurp your form-data -- think: GDPR & LGP...
Experience is a useful, clean and fast functions library for .NET Projects. You can find the project wiki here: https://github.com/bkarababa/Experience
CaptchaMvc will implement your web MVC applications easier and more reliable protection. Features: You can easily change or extend the current implementation of the captcha. By default there are two types of captcha, plain and mathematical. Supports MVC 3, MVC 4, MVC 5. Supports for storing captcha...
This is a helper library for google reCAPTCHA 2.0 Getting started guide: https://github.com/PaulMiami/reCAPTCHA/wiki/Getting-started Change log: https://github.com/PaulMiami/reCAPTCHA/wiki/Change-log
Simple API wrapper for https://2captcha.com/
Cloudflare JavaScript & ReCaptchaV2 challenge solving library (aka. *Under Attack Mode* bypass).
reCAPTCHA for .NET allows a developer to easily integrate Google's reCAPTCHA service (the most popular captcha control used by millions of sites) in an ASP.NET Web Forms or ASP.NET MVC web application. The primary features of the library are: * Renders recaptcha control with appropriate options. * ...
A simple, no-drama, reCAPTCHA validation library that works with ASP.NET Core, Razor Pages, MVC 5, and WebForms.
This is helper build of the BotDetect CAPTCHA nuget meant to be used ONLY with ASP.NET Core code running on top of legacy 4.5.1+ .NET frameworks. For ASP.NET non-Core code on legacy .NET, or for ASP.NET Core code on .NET Core frameworks you have to use our main CAPTCHA nuget. For the description ...
This is a google re-captcha for ASP.NET MVC web apps
Package Description
Google reCaptcha ASP.NET MVC
Extensions for ASP.NET MVC3 (razor) site project with some htmlhelpers, scripts managment (for exsample, better placement), content extensions. Extension create a new layout file in shared folder _LayoutExtended.cshtml with better placed scripts.
Asp.Net Core ui-components & utilities. (ex. Captcha RedirectAndPost PagingNavigator GridCore DataList ...) Samples: https://github.com/Hajisharifi/Diamond-Samples/tree/master/Captcha
The GoogleRecaptchaMvc is a .NET library used to create the html control of Google Recaptcha for asp.net mvc.
The GoogleRecaptcha is a .NET library used to integrate the Google Captcha into the web applications based upon the asp.net platform.
IconCaptcha is a faster and more user-friendly captcha than most other captchas. You no longer have to read any annoying text-images, with IconCaptcha you only have to compare two images and select the image which is only present once. Implementation instructions can be found at https://github.com/...
reCAPTCHA4net allows to easily integrate Google reCAPTCHA (the most popular CAPTCHA service) into ASP.NET web application (both Web Forms or ASP.NET MVC are supported). It supports updated reCAPTCHA API, which provides the No CAPTCHA experience.