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ALTCHA
ALTCHA is a free CAPTCHA alternative that uses a proof-of-work mechanism to protect your website, and online services from spam.
- Open Source
- Free
- Web
- REST API
ALTCHA Alternatives
The best ALTCHA alternatives based on verified products, community votes, reviews and other factors.
Latest update:
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reCAPTCHA is a free security service that protects your websites from spam and abuse.
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Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
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PureVPN is a premium VPN service provider. As one of the first movers in the cybersecurity network, we provide you with the tools, services and knowledge to be the best version of yourself online.
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Cloudflare's service for any company to replace CAPTCHAs and deliver a better experience to web visitors.
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The better, new standard to stop spam content.
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Content moderation is tedious and time-consuming. The Moderation API uses artificial intelligence to analyze, detect, extract and even cover up all the kinds of data you rely on. Spend less time moderating with an AI-powered solution.
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Enterprise Captcha solutions
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Akismet is a spam fighting service that protects millions of WordPress sites from comment and contact form spam.
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A reliable captcha service, offers advanced security to protect websites from spam and abuse while ensuring a user-friendly experience for legitimate visitors.
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the modern spam protection
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GeeTest protects your websites, mobile Apps and APIs from bot threats.
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Forest is an app that helps you stay focused on the important things in life.
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More suitable with Google Chrome, this service enables you ensure you do not waste precious time on updating Facebook status or chatting with people.
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2captcha is captcha bypassing software which offers various exciting tools and simple module that gives the fundamental outlook of the captcha.