mCaptcha is an open source captcha service that you host yourself. Instead of asking visitors to solve a puzzle, it uses proof of work: the browser does a short computation before the form is submitted, which makes automated abuse expensive without bothering people. It is compatible with reCAPTCHA and hCaptcha, so swapping it into an existing form is usually simple. mCaptcha is licensed under the AGPL.
As self-hosted open source software, mCaptcha is not necessarily European, but you can install it on a server in the EU and use it as a European alternative to the American captcha services, with no visitor data leaving your own infrastructure.
Data and operations
Verified operational dependencies, shown separately from ownership and from the service's core data hosting.
Public website
Why this matters
Public DNS routes website visits through Airtel. Visitor IP addresses and request metadata can reach this non-European provider; this does not identify the core service's data location.
Incoming business email
Why this matters
Published MX records route incoming business email through Cloudflare Email Routing. Correspondent details and message content can therefore enter this non-European provider's systems; MX does not reveal the configured storage region.
Authorised outbound email
Why this matters
This domain authorises Cloudflare Email Routing to send email. If active, recipient details and message content can be processed by this non-European provider. SPF does not reveal its configured storage region.
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