reCaptcha by BestWebSoft

If it is not free for Contact Form 7, then it is simply needless. Try other plugins.

Claims that the contact form is a free feature, but when setting it up it tells you that you have to pay for it.

The plugin works as it is supposed to be, lightweight and even in the basic version covers all main functions: secures login, registration and comments (exactly what I'm looking for). I had 5-6 spam users registered daily and fighting for weeks, but after installation, of this plugin, the issue has been resolved. The only recommendation is to proceed with v3 reCaptcha since v2 is not effective. But again, this was not a problem of a plugin, this question to Google. Yes, I highly recommend using this plugin on every single WP website.

This plugin is not free for WP Forms, it can used freely only for Login form, registration form, passwords changes and reaction form. You have to pay for extern plugins. Don't install if you don't want to pay for it.

I had some issues getting this configured with WP Forms,but it seems to be working now.

The only reason I'm not giving 5 stars is because I did need support to get it working properly. The plugin's admin and documentation was not enough. Perhaps this is just due to the complicated nature of Google's Recaptcha and its choice of versions. In any case, support was very prompt and though it did take several iterations with to get what I wanted, it all happened pretty quickly and cheerfully. And I have the unpaid version, which seems to do what I need so far.

simple and easy to use. the only thing to do is apply Google reCAPTCHA account, plugin will take care the rest configurations.

bad plugin

Works perfect

Actually most features are in pro ver only. There's nothing much it does by itself. Don't bother.