Currently JTC works for these Forms: WordPress Login, Register, Lost Password and Comments Forms. WooCommerce Login and Register Forms. Multisite Register Form. BuddyPress/bbPress Register and Sidebar Login Forms. I might add shortcode for JTC someday so that it can be added to other Forms, but currently JTC is primarily designed to protect Login and Registration Forms against spambot and hackerbot auto-registrations, auto-logins and auto-posting.
There may be a bbPress plugin that adds a captcha to the new posts form. If not, then you should not allow anonymous posting since your forum site will be filled with spambot spam posts every day. Before creating JTC this forum site was getting 50,000+ spambot posts per month. After creating JTC this forum site now gets the occasional human spammer post at a rate of 5 human spam posts per month.