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ALTCHA

ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other CAPTCHA solutions, ALTCHA is free, open-source and self-hosted, does not use cookies nor fingerprinting, does not track users, and is fully...

Free • Open SourceSelf-HostedSoftware as a Service SaaSBy Altcha

About ALTCHA

ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other CAPTCHA solutions, ALTCHA is free, open-source and self-hosted, does not use cookies nor fingerprinting, does not track users, and is fully compliant with GDPR.

Key Features

  • ✓Privacy focused
  • ✓Spam Filter
  • ✓GDPR Compliant
  • ✓Captcha
  • ✓Integrated Spam Protection

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Frequently asked questions

What is ALTCHA?

ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other CAPTCHA solutions, ALTCHA is free, open-source and self-hosted, does not use cookies nor fingerprinting, does not track users, and is fully... It is listed under the Free • Open Source license model in the SaaS Lenz directory.

Is ALTCHA free to use?

ALTCHA is listed as Free • Open Source in our directory. Pricing and plan details can change, so check the official website for current terms before committing.

What platforms does ALTCHA run on?

ALTCHA is available on Self-Hosted, Software as a Service SaaS, so you can use it across the devices your team already works with.

Who develops ALTCHA?

ALTCHA is developed by Altcha. You can find more background and documentation on the product's official website.

What are the best alternatives to ALTCHA?

Popular alternatives to ALTCHA include Cloudflare Turnstile, Friendly Captcha, mCaptcha, MTcaptcha, Procaptcha. Compare their features, license models, and platforms on the SaaS Lenz alternatives page.