Akismet, yaCAPTCHA, SI Captcha Anti-spam, Simple CAPTCHA, WP-reCAPTCHA, ImHuman, WP-NOTCAPTCHA, CheckBot, DCaptcha, Math Comment Spam Protection. Antispam Bee.
: 1 | imhuman - simple captcha - - yacaptcha - akismet - checkbot - wp-recaptcha - si captcha anti-spam - wordpress - - antispam bee - dcaptcha - math comment spam protection. - - - wp-notcaptcha