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.
Not sure about captchas but the honeypot filter works fine.
Its open source so there probably is a good level of privacy.
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.
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
