RecaptchaNet 2.1.0

.NET Framework 4.0
There is a newer version of this package available.
See the version list below for details.
Install-Package RecaptchaNet -Version 2.1.0
dotnet add package RecaptchaNet --version 2.1.0
<PackageReference Include="RecaptchaNet" Version="2.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add RecaptchaNet --version 2.1.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: RecaptchaNet, 2.1.0"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install RecaptchaNet as a Cake Addin
#addin nuget:?package=RecaptchaNet&version=2.1.0

// Install RecaptchaNet as a Cake Tool
#tool nuget:?package=RecaptchaNet&version=2.1.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

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.
* Verifies user's answer to reCAPTCHA's challenge.
* Supports ASP.NET 4.0, 4.5, and 4.5.1.
* Supports ASP.NET MVC 4 and 5.
* Seamless support for reCAPTCHA version 1 and version 2.

reCAPTCHA for .NET has the best and most up-to-date documentation among all the other competing libraries.

Product Versions
.NET Framework net40 net403 net45 net451 net452 net46 net461 net462 net463 net47 net471 net472 net48
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (3)

Showing the top 3 NuGet packages that depend on RecaptchaNet:

Package Downloads

N2 Part for adding a Form.


Provides a controller that is ready for MVC application to manage user authentication and registration. Github source:


This is testing of reCaptha for Nuget lib

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
3.1.0 57,424 1/20/2021
3.0.0 579 1/16/2021
2.1.0 573,023 12/8/2015
2.0.0 5,379 11/23/2015
1.8.0 27,499 7/31/2015
1.7.0 12,970 4/19/2015
1.6.0 26,407 8/5/2014
1.5.1 1,026 8/2/2014
1.5.0 5,424 7/29/2014
1.4.0 1,064 7/28/2014
1.3.0 95,801 8/18/2013
1.2.0 17,063 2/27/2013
1.0.1 1,311 2/3/2013
1.0.0 1,101 2/3/2013

1. Supports data type property (API v2 only)
2. Supports data size property (API v2 only)
3. Bug fixes

1. Support for reCAPTCHA v2 APIs.
2. Bug fixes

1. Fixed the SSL issue by adding an enum called SslBehavior and made it the type of the UseSsl property. UseSsl property is no longer a boolean property.

1. Migrated code from CodePlex to GitHub.
2. Bug fixes
3. Optimized code
4. Changed the license to Apache license v2.0

1. Bug fixes
2. Optimized code

1. Added support for HTTPS.
2. Signed the assemblies

1. Added legacy support for .NET 4.0 & ASP.NET MVC 4.
2. Added support for .NET 4.5.1.

1. Minor bug fixes
2. Replaced the direct reference to ASP.NET MVC assembly with a dependency on the ASP.NET MVC Nuget package.

1. You can now verify a user's response to recpatcha challenge asynchronously using the new "await" keyword.
2. By default, recpacha control uses the current UI culture's language. With this release, you can now set it manually if you want.
3. The package adds the RecpatchaNet.ReadMe.txt file to your project to help you get started as quickly as possible.