basically what the title says
the ones i’m aware of:
- google’s recaptcha
cloudflare’shcaptcha
cloudflare being better for privacy compared to google, but still not great afaik
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mCaptcha can be self hosted https://mcaptcha.org/
It’s technically not a CAPTCHA, for the pedantic, but it serves teh same purpose.
The only privacy-friendly CAPTCHA is a self-hosted one.
The only user-friendly kind is none at all.
Depending on the web site, an alternative bot-filtering strategy might make sense, such as:
- Allowing signup without a CAPTCHA, but requiring one before the first post/upload is allowed.
- Allowing signup without a CAPTCHA, but deleting accounts that behave like bots.
- Allowing signup without a CAPTCHA, but deleting accounts that don’t purchase something.
- Allowing login without a CAPTCHA, but restricting retry rates and/or temporarily locking accounts after 10+ failures.
Not sure about captchas but the honeypot filter works fine.
Its open source so there probably is a good level of privacy.
Proton has one
It appears that proton’s is only for them and they don’t offer it to other websites unfortunately
Yeah… Probably eventually knowing them, sadly not yet
