[weeb]

Whatever you use, please remember not everyone has good vision / hearing / dextrous mouse control. Captchas can be a nightmare for accessibility. Most of the 'clever' solutions to this will completely block some subset of keyboard users / blind users / eye gaze users along with the bots.

[cheschire]

It's really frustrating talking to client side developers these days about 508 compliance. It feels like only one in 10 understand the concept of accessibility.