[notpushkin]

I’d just selfhost a PoW captcha like https://mcaptcha.org/ – should be fine for most applications.

[worble]

Wow I had no idea this existed, thanks!

It's cool that it even allows you to to get past captchas with JS disabled, I like this a lot.

[KronisLV]

Thanks for linking this, it’s always nice to see self hosted options.