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Similar WordPress plugins

WPMU Block Spam By Math alternatives

The 12 WordPress plugins most like WPMU Block Spam By Math, by the tags they share, the most in common first. Installs, ratings and updates come from WordPress.org and refresh every night.

WPMU Block Spam By Math

10+ installs · #45,654 most popular

Its stats
Closest match
Zero Spam for WordPress
Shares 3 of WPMU Block Spam By Math's 5 tags.
Most installed
Akismet Anti-spam
5M+ active installs.
Best rated
WP Armour
5.0 out of 5 from 1,477 reviews.
Most recently updated
ActiveLayer Anti-Spam
Updated on Nov 9, 2026.
  1. Zero Spam for WordPress

    by Highfivery Studio

    Free anti-spam for WordPress comments, logins, registrations and forms. No captchas, no moderation queue. Blocks bots before they post.

    Installs
    20K+
    Rank
    #1,201
    Rating
    4.1(143)
    Updated
    6 days ago

    Sharesanti-spamsecurityspam

    Compare with WPMU Block Spam By Math
  2. Akismet Anti-spam

    by Automattic

    The best anti-spam protection to block spam comments and spam in a contact form. The most trusted antispam solution for WordPress and WooCommerce.

    Installs
    5M+
    Rank
    #8
    Rating
    4.7(1.2K)
    Updated
    2 months ago

    Sharesanti-spamspam

    Compare with WPMU Block Spam By Math
  3. Anti-Spam, Spam FireWall by CleanTalk

    by CleanTalk Inc

    Advanced antispam for comments, registrations & contact forms. No CAPTCHA, plus email validation and honeypot. We catch spam others miss!

    Installs
    200K+
    Rank
    #239
    Rating
    4.8(3.2K)
    Updated
    12 days ago

    Sharesanti-spamspam

    Compare with WPMU Block Spam By Math
  4. Gravity Forms Zero Spam

    by GravityKit

    Block form spam in Gravity Forms with an invisible token check, email rejection rules, and optional AI review. No CAPTCHAs for your visitors.

    Installs
    100K+
    Rank
    #453
    Rating
    4.3(24)
    Updated
    2 months ago

    Sharesanti-spamspam

    Compare with WPMU Block Spam By Math
  5. Spam Protection

    by yonifre

    Blocks spam the moment you activate it. No CAPTCHA, no setup, no API key. Multi-Layer. Just install and forget.

    Installs
    30K+
    Rank
    #990
    Rating
    4.7(87)
    Updated
    13 days ago

    Sharesanti-spamspam

    Compare with WPMU Block Spam By Math
  6. WPBruiser Security

    by WPZOOM

    Security and anti-spam without CAPTCHA. Blocks bots on forms, comments and logins, limits login attempts and hardens WordPress. No outside service.

    Installs
    10K+
    Rank
    #1,788
    Rating
    4.6(213)
    Updated
    3 days ago

    Sharesanti-spamsecurity

    Compare with WPMU Block Spam By Math
  7. WP Armour

    by Dinesh Karki

    Fastest growing Anti Spam plugin. No API calls, subscriptions, captcha or puzzle. Full GDPR complaint. For comments, contact form, login, registration

    Installs
    400K+
    Rank
    #141
    Rating
    5.0(1.5K)
    Updated
    2 months ago

    Sharesanti-spam

    Compare with WPMU Block Spam By Math
  8. Titan Anti-spam & Security

    by Themeisle

    Block spam comments, defend against login attacks, strengthen site security. Anti-spam, brute-force protection & two-factor authentication built in.

    Installs
    50K+
    Rank
    #725
    Rating
    4.5(370)
    Updated
    12 days ago

    Sharessecurity

    Compare with WPMU Block Spam By Math
  9. Shield Security

    by Paul

    Smart WordPress security that blocks bots automatically, guides you to what matters, and repairs problems — without drowning you in noise.

    Installs
    30K+
    Rank
    #938
    Rating
    4.8(1K)
    Updated
    13 days ago

    Sharessecurity

    Compare with WPMU Block Spam By Math
  10. Captcha by BestWebSoft

    by bestwebsoft

    1 The Ultimate Spam Protection Plugin Using Captcha for WordPress Forms.

    Installs
    10K+
    Rank
    #1,988
    Rating
    4.1(21)
    Updated
    5 days ago

    Sharessecurity

    Compare with WPMU Block Spam By Math
  11. ActiveLayer Anti-Spam

    by Syed Balkhi

    Intelligent spam protection for WordPress forms, comments, and reviews. No CAPTCHA needed. Works with WPForms, Contact Form 7, WooCommerce, and more.

    Installs
    10K+
    Rank
    #1,850
    Rating
    4.9(10)
    Updated
    1 day ago

    Sharesanti-spam

    Compare with WPMU Block Spam By Math
  12. Sucuri Security

    by Sucuri

    The Sucuri WordPress Security plugin is a security toolset for security integrity monitoring, malware detection and security hardening.

    Installs
    600K+
    Rank
    #106
    Rating
    4.2(386)
    Updated
    27 days ago

    Sharessecurityspam

    Compare with WPMU Block Spam By Math

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