Top 20 NuGet captcha Packages

Project to simplify ReCaptcha use with Support PROXY, ASP.NET MVC. All Languages supported. Readme on Github.
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.
Cloudflare Javascript & reCaptcha challenge (I'm Under Attack Mode or IUAM) solving / bypass .NET Standard library.
Smart Library, Smart Captcha, Captcha
CloudProxy .Net / Proxy server to bypass Cloudflare protection.
YetAnotherCloudProxy .Net / Proxy server to bypass Cloudflare protection.
z.Captcha.Core is a fork of DNTCaptcha.Core is a captcha generator and validator for ASP.NET Core applications.
The GoogleRecaptcha is a .NET library used to integrate the Google Captcha into the web applications based upon the asp.net platform.
Super Nova is utility library can be used for multi purpose for captcha and mail sending and lot more
Simple API wrapper for https://anti-captcha.com/
Simplay add Google's reCaptcha v3 to your .NET Core project. Go to github for step-by-step help implementation.
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...
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...
The GoogleRecaptchaMvc is a .NET library used to create the html control of Google Recaptcha for asp.net mvc.
The GoogleRecaptchaWebForms is a .NET library used to create the server control of Google Recaptcha for asp.net web forms.
This client library enables working with the Renet Consulting CoreCaptcha Serverless service for user validation. For this release see notes - https://github.com/RenetConsulting/angularcore.net/tree/master/Services/CoreCaptcha/README.md and https://github.com/RenetConsulting/angularcore.net/tr...
MVC compliant captcha generation library
vaptcha dotnetcore sdk. Commonly used types: IVaptchaService
A library which adds support for Google ReCaptcha in ASP.NET Core projects.