European alternatives to reCAPTCHA

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.

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.

Trustcaptcha is a captcha service from Germany. They protect your website from bot and spam attacks while protecting the data of your customers without annoying them with puzzles, or other tasks. A free demo of this can be found on their website.

Captcha is a captcha service from Austria. The proof-of-work system used, does not require user interaction. They offer a WordPress plugin, a Keycloak extension and a Joomla integration.

Swetrix CAPTCHA is a captcha service from the Ukrainian web analytics company Swetrix. The service is open-source, has a focus on privacy and is in the same management panel as the web analytics service.

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.