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This product is listed as “Self-hosted & Open Source”, which is why it does not necessarily have to be European.

ALTCHA is an open-source and self-hosted captcha service. No cookies, fingerprints or trackers are used. To host ALTCHA, you only need to integrate the ALTCHA web component into your website, which then needs to be connected to a server that provides challenges. There are many ready-made systems for this server, for example a WordPress plugin or libraries for frameworks such as Ruby on Rails or Laravel. ALTCHA also offers an API, but this is not hosted in Europe. ALTCHA is licensed under the MIT license.

The source code of ALTCHA is on GitHub and more detailed instructions are provided on the documentation page.


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Other products in category Captcha services

Friendly Captcha is a captcha service from Germany that helps users protect websites from bots. It works in such a way that no interaction with the captcha service is necessary except for clicking on a checkbox. Thus, the user does not have to select images or decipher bent letters.

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Germany EU EU hosted Free plan

CaptchaFox is a captcha service from Germany, that protects users against bots and spam. It is privacy-focused, accessible, and they offer a free plan. Integrations for WordPress, Node, Vue and React are provided and the multi-user dashboard allows administrators to design the captcha widget.

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