There are, but they all take a lot longer to implement securely than signing up for recaptcha.
I need re-captcha private/public api keys for the faucet, I can't be bothered signing up with those snoopy google bastards. If anyone can
PM me the api keys I'll send 100 PMC to your address for your troubles.
https://www.google.com/recaptcha/admin/createAre there not other Captcha code snippets out there you can use? I think I even followed a tutorial and wrote one in PHP last year.