Defender
Block visitors based on the country they are visiting from. It can be very useful…
Tag do plugin: anti-spam
Super Simple SPAM Stopper
Prevents automated SPAM by requiring visitors to answer a question of your choosing (plaintext or…
WPMU Block Spam By Math
This plugin protects your WPMU signup process against spambots with a simple math question.
Ajax Force Comment Preview
Visitors to your site are forced to preview their comment prior to submitting it.
BetterAntiSpamBot
Trick the spambots. Real dynamic JavaScript encryption of your email addresses.
RIDEN
Protect your site from spammers and bots with RIDEN’s "neighborhood watch".
CIDRAM
CIDRAM: A PHP-level CIDR/IP-based firewall solution.
WP Slider Captcha
An anti-spam captcha using jQuery's UI slider. After the position of the slider is past…
WP-Mail-Validator
WP-Mail-Validator is an anti-spam plugin. It provides mail-address validation in 5 ways:
Spam_BLIP
Spam BLIP stops comment spam before it is posted, using DNS blacklists, existing comments marked…
DigoWatchWP
The plugin DigoWatchWP scans your blog posts and pages for changes.
WP Custom My Password
Your user can custom his own password on the registration screen with me.
Block Referers
Block unwanted visitors from viewing your WordPress site.
Chinese Comment Spam Protection
Asks the visitor making the comment to key in the disappeared chinese word. This is…
ClickChina
防止垃圾评论插件,点击正确的图形提交评论,仿"Clickcha"(Click on the Right picture to submit comments,to prevent spam comments,as clickcha)
FraudGrade
Protect WordPress from hackers, bots and general bad users. Block connections from Proxies, VPN, Tor,…
Anti-Spam Zapper for WordPress
Anti-Spam Zapper will automatically remove spam comments and block spambots without annoying CAPTCHAs. Protect your…
Scramble Email
Simple shortcode to scramble (hide) email addresses to email bot harvesters.
***** Ctanfor Anti-Spam *****
Ctanfor Anti-spam is a small and lightweight anti-spam plugin. It is free for personal and…
CCAPTCHA retype
this plugin have a short code to use evry where you need you are looking…