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Curated

European alternative to

CAPTCHA & Bot Protection Services

A captcha service detects whether a website visitor is a human or a bot, protecting forms, login pages, and comment sections from automated spam and abuse.

8 Alternatives Found

German captcha service that protects websites from bots without requiring users to solve puzzles. Users only need to click a checkbox while a proof-of-work challenge runs invisibly in the background.

Key Features

No user puzzlesProof-of-workGDPR-compliantEasy integration
freemiumFree up to 1,000 requests/month, paid from €9/month
Website

Privacy-first captcha from German cybersecurity company Myra Security. No cookies, no tracking, no user puzzles. Powered by CDN signals and certified for ISO 27001 and PCI DSS compliance.

Key Features

No cookies or trackingNo user puzzlesISO 27001 certifiedPCI DSS compliant
paidEnterprise pricing
Website

German captcha service that protects websites from bot and spam attacks without presenting puzzles to users, while fully protecting user data.

Key Features

No user puzzlesBot & spam protectionGDPR-compliantFree demo available
freemiumFree demo available, paid plans for production use
Website
CaptchaFox logo

CaptchaFox

Germany

German privacy-focused captcha service with a free plan, multi-user dashboard, and integrations for WordPress, Node.js, Vue, Angular, and React.

Key Features

Privacy-focusedFree planMulti-user dashboardFramework integrations
freemiumFree plan available, paid plans for higher volume
Website
ALTCHA logo

ALTCHA

Open Source

Open-source, self-hosted captcha service with no cookies, fingerprints, or trackers. Requires integrating a web component and a backend server. Libraries available for Ruby on Rails, Laravel, and more. MIT-licensed.

Key Features

No cookies or fingerprintsOpen sourceSelf-hostableWordPress plugin
freeFree and open source (MIT license)
Website
Captcha.eu logo

Captcha.eu

Austria

Austrian captcha service using a proof-of-work system that requires no user interaction. Offers a WordPress plugin, a Keycloak extension, and a Joomla integration.

Key Features

No user interactionWordPress pluginKeycloak extensionJoomla integration
freemiumFree tier available
Website
mCaptcha logo

mCaptcha

Open Source

Open-source, self-hosted captcha using proof-of-work. Compatible with reCAPTCHA and hCaptcha APIs. AGPL-licensed.

Key Features

Proof-of-workreCAPTCHA/hCaptcha API compatibleOpen sourceSelf-hostable
freeFree and open source (AGPL license)
Website
mosparo logo

mosparo

Open Source

Open-source, self-hosted modern spam protection for web forms. Catches spam without user interaction and without tracking. MIT-licensed.

Key Features

Spam protection for formsNo user interactionOpen sourceSelf-hostable
freeFree and open source (MIT license)
Website

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