CAPTCHA.NET

A powerful, provider-based .NET CAPTCHA control with audio challenge and Microsoft Visual Studio design-time support.

Project Activity

See All Activity >

License

GNU Library or Lesser General Public License version 2.0 (LGPLv2)

Follow CAPTCHA.NET

CAPTCHA.NET Web Site

Other Useful Business Software

$300 Free Credits for Your Google Cloud Projects

Start building on Google Cloud with $300 in free credits. No commitment, no credit card required until you're ready to scale.

Launch your next project with $300 in free Google Cloud credits—no strings attached. Test, build, and deploy without risk. Use your credits across the entire Google Cloud platform to find what works best for your needs. After your credits are used, continue with always-free tier services. Only pay when you're ready to scale. Sign up in minutes and start exploring.

Start Free Trial

Rate This Project

User Ratings

1.0 out of 5 stars

★★★★★

★★★★

★★★

★★

★

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5

features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5

design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5

support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 2 / 5

User Reviews

Filter Reviews:

All

kwcooffee1 Posted 2013-08-18

The original source code at coreproject (Captcha) compiles and works great on ASP.NET 4.0 but this binary module yields a "ctor" runtime error.
ilya-tretyakov Posted 2010-02-01

Do not waste your time with it! No sample code. No screenshots. It do not work. No VS sample project. I used it earlier, but for now it not good idea.

Additional Project Details

Operating Systems

Linux, Windows

Languages

English

Intended Audience

Developers, System Administrators

User Interface

Web-based

Programming Language

ASP.NET, C#, JavaScript

Related Categories

C# Cryptography Software, C# HTTP Servers, JavaScript Cryptography Software, JavaScript HTTP Servers, ASP.NET Cryptography Software, ASP.NET HTTP Servers

Registered

2008-03-10

Similar Business Software

AdRem NetCrunch

NetCrunch is a powerful, scalable, all-in-one network monitoring system built for modern IT environments. It supports agentless monitoring of thousands of devices, covering SNMP, servers, virtualization (VMware, Hyper-V), cloud (AWS, Azure, GCP), traffic flows (NetFlow, sFlow), logs, and custom...

See Software
Proton Mail

Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your...

See Software
Safetica

Safetica’s Intelligent Data Security protects sensitive data where teams work, using powerful AI to deliver contextual awareness, reduce false positives, and stop real threats without disrupting productivity. With Safetica, security teams can maintain visibility and control over sensitive data,...

See Software
Grafana Cloud

Grafana Labs delivers the leading AI-powered observability platform, built around Grafana—the world’s most widely adopted open source technology for dashboards and visualization. Recognized as a Leader in the 2025 Gartner® Magic Quadrant™ for Observability Platforms, Grafana Labs supports more...

See Software
Uniqkey

Uniqkey: Protect every login. Access with confidence. Uniqkey is Europe’s trusted password and access management platform - purpose-built for companies that demand security, simplicity, and control. Engineered by European cybersecurity experts, our platform combines military-grade...

See Software
Admin By Request Endpoint Privilege Management

Admin By Request’s Endpoint Privilege Management gives organisations full control over local admin rights, application elevation, and endpoint privilege access across Windows, macOS, and Linux, without the complexity of traditional PAM solutions. For mid-market organisations, EPM acts as a...

See Software