Captcha 4.4.0

.NET Standard 1.6 This package targets .NET Standard 1.6. The package is compatible with this framework or higher. .NET Framework 2.0 This package targets .NET Framework 2.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Captcha --version 4.4.0                

                    
                

            
NuGet\Install-Package Captcha -Version 4.4.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Captcha" Version="4.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Captcha --version 4.4.0                

                    
                

            
#r "nuget: Captcha, 4.4.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install Captcha as a Cake Addin
#addin nuget:?package=Captcha&version=4.4.0

// Install Captcha as a Cake Tool
#tool nuget:?package=Captcha&version=4.4.0

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 & LGPD!

BotDetect uses many different image and sound algorithms for the generation of Captcha codes. While each Captcha algorithm is easily comprehensible to human users, generating Captcha codes by random algorithm makes the Captcha challenge extremely difficult to pass automatically.

BotDetect provides an audio Captcha alternative to keep ASP.NET web applications accessible to the blind and other people for whom reading the Captcha code could be a problem, enabling you to make WCAG and Section 508 compliant websites.

BotDetect is a self-hosted .NET Captcha Component -- no 3rd-party servers are involved in the generation, displaying, and validation of Captcha challenges.
Therefore, BotDetect neither identify nor stalk your users and visitors -- nor does it slurp logins, passwords, and other data they fill in your forms.
This allows for the GDPR & LGPD compliant sites -- and also does miracles for the forms on any of the national security-sensitive ones.

PLEASE NOTE:
--------------------
The availability of the new BotDetect CAPTCHA Simple API depends on the ASP.NET version that your application is written in:
* For the legacy ASP.NET applications -- it is supported in this release
* For the ASP.NET Core applications -- it will be supported from the next minor release in 2-3 weeks time
We hit some .NET Core obfuscation induced bugs that we have to iron out first.

FEATURES:
--------------------
 * Out-of-the-box integrations with Angular, AngularJS, jQuery, and React frontend frameworks
 * Produces XHTML 1.1 Strict, Section 508 and WCAG AAA compliant markup
 * Fully compatible with ASP.NET Core 1.x and 2.x
 * Fully compatible with legacy .NET 2.0 and onwards, .NET Core 1.x and .NET Core 2.x
 * Fully compatible with ASP.NET MVC 1-5 and ASP.NET Core MVC (MVC 6)
 * Fully compatible with ASP.NET WebForms
 * Fully compatible with ASP.NET Web Pages
 * Fully compatible with ASP.NET Ajax and jQuery Ajax validation
 * Fully compatible with SharePoint Server / Foundation
 * Visual Studio .NET 2017, 2015, 2013, 2012, 2010, 2008, 2005 and 2003 Designer support
 * Medium trust environment support for shared servers
 * Tested in Chrome, Firefox, Safari, IE, Edge and Opera browsers
 * Full support for all Android & iOS devices
 * Localized Captcha generation, using various Unicode character sets and downloadable multi-language sound pronunciations
 * Custom Captcha image size, format, color scheme...
 * Custom Captcha code length, style, character set, timeouts, generated code filtering...
 * Many other randomization & customization options
 * 60 secure & readable Captcha image styles
 * 20 secure & accessible audio Captcha sound styles
 * It works in China
 * It does not identify and stalk your users and visitors
 * It does not slurp your form data
 * It allows for the GDPR and LGPD compliant sites
 * Licensable source code

What nuget to use?
--------------------
Please note that from the version 4.2 onward we have two BotDetect CAPTCHA nugets on the nuget.org.
 * Use THIS nuget for ASP.NET applications running on the legacy .NET (non-Core) Frameworks
 * Use THIS nuget for ASP.NET Core applications running on the .NET Core Frameworks
However, there is one special case that required the separate nuget.
 * Use our NEW helper nuget INSTEAD OF this one for the special case of ASP.NET Core applications running on the legacy .NET (non-Core) Frameworks.
The new helper nuget name is CAPTCHA.asp.net.core.on.legacy.net.frameworks and it is available at CAPTCHA.asp.net.core.on.legacy.net.frameworks

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.6 is compatible.  netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net20 is compatible.  net35 is compatible.  net40 was computed.  net403 was computed.  net45 was computed.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Captcha:

Package Downloads
EasyCaptchaMvc

EasyCaptcha library for Mvc

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Version Downloads Last updated
4.4.2 455,433 7/22/2019
4.4.1 14,709 4/8/2019
4.4.0 20,148 11/6/2018
4.3.3 15,974 10/23/2018
4.3.2 43,815 5/27/2018
4.3.1 9,704 5/14/2018
4.3.0 11,496 2/15/2018
4.2.0 94,823 4/29/2017
4.1.0 83,869 7/25/2016
4.0.1 33,454 3/9/2016
3.0.18 21,364 12/9/2015
3.0.17 8,309 10/22/2015
3.0.16 255,363 6/5/2014
3.0.15.1 5,131 4/24/2014
3.0.15 4,088 4/22/2014
3.0.14.10 12,190 2/17/2014
3.0.14.9 4,338 12/11/2013
3.0.14.7 3,883 12/9/2013
3.0.14.6 4,420 12/7/2013

https://captcha.com/captcha-roadmap-and-release-notes.html#aspnet-release-notes