What is ALTCHA?
ALTCHA is an open-source CAPTCHA alternative. Proof-of-work based verification. No cookies, no tracking. Privacy-friendly by design. Self-hosted for full control. Invisible to users. Easy integration. MIT licensed.
Key Features
- ✓Open source
- ✓Proof-of-work
- ✓No tracking
- ✓No cookies
- ✓Self-hosted
- ✓Privacy-friendly
- ✓Invisible
- ✓Easy integration
- ✓MIT license
- ✓No third-party
- ✓Lightweight
- ✓Accessible
🔒 Privacy & Data Protection
ALTCHA is fully self-hosted with no tracking. For privacy-first CAPTCHA, ALTCHA delivers open-source freedom.
Best For
Bot protectionForm protectionPrivacy CAPTCHASelf-hosted CAPTCHAGDPR CAPTCHAreCAPTCHA alternative
💰 Pricing
ALTCHA is free and open-source under MIT license.
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