3 ms·

There are plenty of open source "type the letters" captchas, there are also open source PoW "captchas" like https://github.com/FriendlyCaptcha https://github.co

by easrng 4y ago

There are plenty of open source "type the letters" captchas, there are also open source PoW "captchas" like https://github.com/FriendlyCaptcha https://github.com/FriendlyCaptcha (that one might only be partially open, not sure)