Best Free Captcha Providers For Website

reCAPTCHA is a free advanced security service that uses to safeguard/Protect your application/Website from spam and other abusive actions.

Advantages :

• Advanced Security
• Ease of Use
• Creation of Value

We can integrate reCAPTCHA with different web technologies like Java, PHP,..etc.

Web Site Reference Link: Click Here

2.BotDetect Java CAPTCHA

BotDetect Captcha is an effective out-of-the-box security solution designed to deal with this threat, available for ASP.NET Captcha Control for .NET web applications, an ASP Captcha Component for Classic ASP forms, or a PHP Captcha Library for PHP forms, a Java Captcha Library for Java forms.

Advantages :

• Self-hosted • Licensable source-code
• Native .NET Core 1/2, .NET, Java & PHP backends
• Works in China • No third-party server dependencies
• Works with Angular/JS, jQuery, etc, .js web frameworks
• TestMode-enabled — ready for your CI/CD pipelines
• Localized Captcha generation, using various Unicode character sets and multi-language sound pronunciations
• Custom Captcha image size, code length, CSS & icons, tooltips, and pretty much everything else…
• 20 secure & accessible audio Captcha sound styles
• 60 secure & legible Captcha image styles
• Produces XHTML 1.1 Strict, Section 508, and WCAG AAA compliant markup
  
  
  

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3. JCaptcha

JCaptcha is one of the best captcha resolved for java technology.

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4.Captchas.net – Free CAPTCHA

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5.Quick CAPTCHA (PHP)

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6.Simple Javascript CAPTCHA

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