Last updated
Privacy-first CAPTCHA solution that blocks bots invisibly while keeping forms accessible. EU-based, no cookies, no tracking, easy integration.
Estonian CAPTCHA that verifies humans through invisible cryptographic proof-of-work: no puzzles to solve, no cookies, no PII, and all infrastructure inside the EU.
Private Captcha is an Estonian, EU-only bot protection service built on invisible cryptographic proof-of-work challenges. There are no puzzles for users to solve, no PII collected, and every byte of infrastructure (servers, storage, and CDN) stays inside the European Union.
Operated by Intmaker OÜ, Private Captcha is open source on GitHub and offers a self-hosted option for teams that need full control. Backward-compatible APIs make switching from reCAPTCHA or hCaptcha straightforward.
Key features:
- Invisible cryptographic challenges using proof-of-work with automatic difficulty scaling
- No PII from end users, no cookies, no tracking, and a DPA provided on all plans
- EU-only infrastructure with exclusive EU servers, storage, and CDN
- Self-hosting option to run it on your own servers for full sovereignty
- Open source code available on GitHub, fully auditable
- Audit logs providing compliance-ready coverage across all events
- Real human support with a 24-hour business-hour response target
- 10+ languages with multiple display modes and widget customisation
Pricing starts at €9/month for the Basic tier (10,000 requests/month) with all features included across tiers. 14-day free trial with no credit card required, and pro-rata refunds plus auto-upgrade protection on usage spikes.
Categories
European alternative to
Similar European alternatives
Veriff
Verify customer identities instantly with AI-powered document checks, liveness detection, KYC workflows, and fraud prevention — ISO 27001 and eIDAS certified.
Bitdefender
Award-winning antivirus, EDR, and XDR from Romania's global cybersecurity leader — 100% threat detection scores and 500M+ users protected across 170 countries.
Proton Pass
Securely manage passwords, passkeys, and email aliases. Enjoy autofill, 2FA, secure sharing, and dark web monitoring. Open-source and free forever.
Cookiebot
Automatically scan, categorise, and manage website cookies with a GDPR and CCPA-compliant consent banner — no manual configuration, with continuous re-scanning.
Hanko
Open source authentication solution with passkeys, 2FA, SSO support. GDPR compliant, built in Europe. Switch between self-hosted and cloud anytime.
ESET
Multilayered endpoint security for home and business — the NOD32 antivirus engine from Slovakia's cybersecurity pioneer, protecting users in 200+ countries since 1987.