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.
European captcha services
A captcha system helps to detect whether a real human or a bot is using a website. This is useful, for example, in the comments section of a blog to prevent bots from creating comments in large numbers. The most popular captcha service is reCaptcha from Google. There are many types of captcha's. A much used system is that images are shown and you have to select the images that contain a certain object.
This category contains services from companies based in a member state of the European Union (EU), the European Economic Area (EEA) and the European Free Trade Association (EFTA).
You can read more about the listing criteria here.
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.
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.
Self-hosted & Open Source
mCaptcha is an open-source captcha service for self-hosting. It uses proof-of-work and is compatible with reCAPTCHA and hCaptcha. mCaptcha is licensed under the AGPL license.
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