Best CAPTCHA Software for WordPress

MTCaptcha is a privacy-focused and accessible captcha service. It offers an adaptive invisible noCaptcha that ensures easy verification for humans while posing a challenge for bots. MTCaptcha complies with GDPR and WCAG, guaranteeing the protection of your data without any sharing or selling to third parties. The captcha images are colorblind-safe, and the widget is fully VPAT compliant, optimized for screen readers. Supporting multiple languages, MTCaptcha can be fully customized to match any webpage. It also provides audio support, enhancing accessibility for visually impaired users. Trusted by Enterprises, Government, NGOs worldwide, MTCaptcha is available in major languages and functions globally, including in China. Its adaptive Risk Engine effectively detects and responds to threats, maintaining the balance between challenging bots and facilitating human verification.

ALTCHA is a CAPTCHA alternative which uses a proof of work mechanism to protect websites and online services against spam. ALTCHA uses a mechanism of proof-of-work to protect your website, online services, and APIs from spam and unwanted material. Unlike other solutions ALTCHA is open-source, self-hosted and free. It does not require external services and does not use fingerprinting or cookies.

Solve Media's CAPTCHA Type-In™ Ads are an easy plug in solution that saves users time and makes your site more secure. Instead of struggling to solve difficult puzzles, users can quickly enter a brand message or security phrase. Your users will save an average of seven seconds each time they use your service. Earn incremental revenue on a revenue-share model from previously unmonetized placements. Behind our TYPE IN™, ads is a sophisticated techniqe that protects your website from bots, attackers, and spammers. Our security advisory council is made up of leading industry experts who are responsible for the technology that makes online advertising safe. CAPTCHA is used to determine whether an end-user is a real person or a robot. Did you know that bots make up 25% of all web traffic? As a Solve Media Partner, you're protected by some of the best security minds in the industry.

More than 50.000 websites worldwide use our protection. Improve your captcha in 5 minutes. We have captcha plug-ins for 19 popular content managing systems, including Concrete5, phpBB Simple Machines Forum MediaWiki PunBB MyBB Movable Type DataLife Engine Phorum Woltlab BB OpenCart Pligg XOOPS.

Prevention is always more cost-effective when it comes to fraud. CyberSiARA's intuitive traffic testing provides a proactive cyber-security approach that stops fraud at its tracks. The traffic classification capability distinguishes between real users and potential attackers using interactive enforcement challenges in real-time. This stops both automated and user-driven attacks. CyberSiARA uses powerful processes for traffic analysis to determine user intention. The system uses interactive challenges to test suspicious activity by identifying fraud indicators in traffic behavior. This allows legitimate users to have a seamless experience while attacks of all kinds are defeated. Innovative challenge strategies are used to stop traffic designed to overcome authentication challenges.