bgribaudo

Attempts to prevent automated SPAM by requiring visitors to answer a question of your choosing in order for their comment to be accepted. Presumably, spambots will be unable to correctly answer this question and so comments they attempt to post will be rejected.
Only regular comments from non-logged-in users are filtered. Pingbacks, trackbacks and authenticated users will not be prompted to answer the verification question.
Privacy Note: This plugin does not call home or communicate with any external servers or services. All processing is done locally within your WordPress site.

Super Simple SPAM Stopper

Prevents automated SPAM by requiring visitors to answer a question of your choosing (plaintext or regex).

hatul

“En Spam” blocks totally comments and form submissions of bots by cookies and javascript. Bots can’t use cookies and javascript and therefore will not be able to comment. 
Users that blocking cookies or Javascript can to comment after transfer in special page.
We protect Elementor Pro and Contact Form 7 (cf7) forms and default comments of WordPress.
The plugin is transparent to your visitors, only bots will be blocked.
You can see how many spambots blocked in dashboard widget.
“En Spam” means “have not spam” in Hebrew.

En Spam

Block spam with cookies and JavaScript. All Spambots will remain away from your blog. Without settings or Captcha, install and forget the spam.

Super Simple SPAM Stopper vs En Spam