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Stop spam bots from registering, logging in, filling out contact forms and commenting on your site without using annoying Captcha codes or puzzles.

By: oxfordbio.

(13)
Last Updated: 3 months ago
500+ active installs
Compatible up to: 4.3.3
(1)
Last Updated: 6 months ago
20+ active installs
Compatible up to: 4.3.3

Block 250+ spam sites, such as semalt.com and 4webmasters.org! Keep your website safe and your Google Analytics statistics clean and accurate.

By: Roger Rodrigo.

(4)
Last Updated: 7 months ago
1,000+ active installs
Compatible up to: 4.2.7

Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.

By: J. Kokkalis (BlueCoder).

(12)
Last Updated: 8 months ago
3,000+ active installs
Compatible up to: 4.2.7

Comment spam prevention without moderation, captchas or questions

By: benohead and amazingweb-gmbh.

(2)
Last Updated: 10 months ago
2,000+ active installs
Compatible up to: 4.1.10
(2)
Last Updated: 1 year ago
900+ active installs
Compatible up to: 4.1.10

WP Anti Spam can anti automated spambots or anti spams by"comment","ip","name","email","url".

By: boliquan.

(3)
Last Updated: 1 year ago
8,000+ active installs
Compatible up to: 4.0.10

Very light invisible method to block auto-spam when spam comment is posted. Pings and trackbacks cheks for real backlink.

By: Tkama.

(3)
Last Updated: 1 year ago
600+ active installs
Compatible up to: 4.0.10

This plugin Adds Crazy Additional Password Protection and Security to your blog.

By: askapache.

(4)
Last Updated: 1 year ago
4,000+ active installs
Compatible up to: 4.0.10

Extend Visitor Maps and Who's Online with extra features, such as IP and referer banning. Display the referring host name and search string.

By: President McCheese.

(1)
Last Updated: 2 years ago
1,000+ active installs
Compatible up to: 3.8.13

Simple, but strong HTTP security, to prevent Brute force attack. One-click solution!

By: Vitaliy Kaplya (vitaliy.kaplya@gmail.com).

(2)
Last Updated: 2 years ago
200+ active installs
Compatible up to: 3.6.0

Trick the spambots. Real dynamic JavaScript encryption of your email addresses.

By: noneevr2.

(2)
Last Updated: 3 years ago
30+ active installs
Compatible up to: 3.5.2

Smart invisible captcha for wordpress comments

By: Andrey Sorvin.

(10)
Last Updated: 3 years ago
10,000+ active installs
Compatible up to: 3.5.2

This plugin allows WordPress to block over 95% of spam comments using a time-based hash.

By: Steven de Salas.

(0)
Last Updated: 4 years ago
1,000+ active installs
Compatible up to: 3.4.2

This plugin prevents users from commenting or viewing your website if a comment of theirs has been marked as spam.

By: Lelkoun.

(4)
Last Updated: 4 years ago
10,000+ active installs
Compatible up to: 3.3.2

Remove known spammer email addresses from wp_mail()'s To, Cc, and Bcc fields.

By: Jennifer M. Dodd.

(0)
Last Updated: 4 years ago
410 downloads
Compatible up to: 3.3.2

With this wp antispam plugin you can stop spammers commenting on your blog with poor comments looking for links.

By: Aidan Sheenan.

(1)
Last Updated: 4 years ago
100+ active installs
Compatible up to: 3.3.2

SiteBrains blocks spam posts using a completely configurable set of rules. Both interactively as the user types and on our servers upon submission.

By: SiteBrains).

(0)
Last Updated: 4 years ago
200+ active installs
Compatible up to: 3.2.1

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