Best spam blocker plugins for WordPress
The most popular spam blocker plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Zero Spam for WordPress leads with 20K+ active installs, ahead of oopspam Anti-Spam (6K+) and Invisible Anti Spam for Contact Form 7 (Simple No-Bot) (200+). All 13 plugins tagged “spam blocker” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 10 spam blocker plugins
- 1.
Zero Spam for WordPressThe most installed spam blocker plugin, with 20K+ active installs. Rated 4.1 from 143 reviews, updated 5 days ago.
- 2.
oopspam Anti-Spam6K+ active installs. Rated 4.9 from 51 reviews, updated 4 days ago.
- 3.
Invisible Anti Spam for Contact Form 7 (Simple No-Bot)200+ active installs. Only 3 reviews so far, last updated 6 years ago. Tested only up to WordPress 5.3.27.
- 4.
Astounding Spam Prevention100+ active installs. Rated 4.6 from 9 reviews, last updated 2 years ago. Tested only up to WordPress 6.5.14.
- 5.
MUTE20+ active installs. Only 2 reviews so far, updated 16 hours ago.
- 6.
ARS Reg Secure10+ active installs. No reviews yet, last updated 12 years ago. Tested only up to WordPress 3.7.41.
- 7.
Analytical Spam Filter10+ active installs. No reviews yet, updated 4 months ago.
- 8.
A1JSpamGuard10+ active installs. Only 3 reviews so far, last updated 1 year ago. Tested only up to WordPress 6.5.14.
- 9.
Easy Country Spam Blocker10+ active installs. No reviews yet, updated 2 months ago.
- 10.
ProfileGuardFewer than 10 active installs. No reviews yet, updated 1 week ago.
All 13 plugins tagged “spam blocker”
Zero Spam for WordPress
#1,203by Highfivery Studio5 days ago
Free anti-spam for WordPress comments, logins, registrations and forms. No captchas, no moderation queue. Blocks bots before they post.
- Installs
- 20K+
- Rating
- 4.1(143)
- Downloads
- 426/day
oopspam Anti-Spam
Up in the last 7 days:2#2,718by oopspam Team4 days ago
Protect your forms from spam with 99.9% accuracy - no CAPTCHA, no JavaScript, no tracking. Trusted by 3.5M+ websites.
- Installs
- 6K+
- Rating
- 4.9(51)
- Downloads
- 273/day
Invisible Anti Spam for Contact Form 7 (Simple No-Bot)
Up in the last 7 days:1#12,848by lilaeamedia6 years ago
Simple, lightweight, no captcha, no configuration. Just works.
- Installs
- 200+
- Rating
- 2.3(3)
- Downloads
- 0/day
Astounding Spam Prevention
Down in the last 7 days:54#14,288by willjenkins2 years ago
Very effective anti-spam plugin that eliminates comment spam, and registration spam. Combines many effective methods for identifying spammers and keep …
- Installs
- 100+
- Rating
- 4.6(9)
- Downloads
- 0/day
MUTE
Up in the last 7 days:3,944#26,608by Masahiro Matsuzakitoday
Stop spam and AI bot attacks from your contact forms. No CAPTCHA, no friction. Bots are blocked silently while real inquiries get through.
- Installs
- 20+
- Rating
- 5.0(2)
- Downloads
- 11/day
ARS Reg Secure
Up in the last 7 days:6,741#37,223by arijose13 years ago
This plugin helps block bogus registrations by allowing a custom registration field and answer.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Analytical Spam Filter
#43,635by John Dalesandro5 months ago
Stop spam without making your visitors prove they're human. No captchas, no accounts, and no external services required.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
A1JSpamGuard
Up in the last 7 days:1,199#44,989by A1JBot1 year ago
A1JSpamGuard is a simple and efficient WordPress plugin to block spam in comments, registration forms, and contact forms.
- Installs
- 10+
- Rating
- 5.0(3)
- Downloads
- 2/day
Easy Country Spam Blocker
#48,300by Medium Interactive2 months ago
Easy Country Spam Blocker is a simple plugin that blocks spam traffic from your website.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
ProfileGuard
#50,205by abezumaite9 days ago
Block bot registrations, stop profile spam with a database honeypot, and protect LMS and course sites with a lightweight zero-cloud firewall.
- Installs
- <10
- Rating
- –
- Downloads
- 11/day
AI Spam Comment Detector
Up in the last 7 days:9,858#58,657by Rashed Hossain1 year ago
AI-powered comment spam detection using GPT-4. Blocks spam comments with inline user warnings—no CAPTCHA needed.
- Installs
- <10
- Rating
- –
- Downloads
- 2/day
EzerWeb Forms and Comments Anti-Spam Guard
#60,883by Eric Kouassi12 days ago
Modular dual-layer anti-spam protection for WordPress forms and comments with custom TLD and email filtering.
- Installs
- <10
- Rating
- –
- Downloads
- 10/day
Identibyte for Contact Form 7
Up in the last 7 days:4,032#65,901by identibyte7 years ago
Make your forms intelligent. Detect and block signups and emails from disposable and fake email addresses in your Contact Form 7 forms.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day