Captcha Minibb

Buhsl Captcha is a very simple, but powerful plug-in that helps you to prevent spam. Plug-in don't use COOKIES or SESSION. So there is no annoying messages like "You should enable cookies" for visitors. Plug-in use hashed captcha code value that will be comparing with entered captcha value and...

There are a lot of great plugins to prevent spam but especially the effectiv captcha images can annoy your human visitors. Geo Captcha uses the knowledge that a lot of spam is caused from a few countries and prevents them from spamming.Visitors from the countries on your whitelist will never see...

Adds Numerical addition CAPTCHA anti-spam methods to WordPress on the comment form. In order to post comments, users will have to type in the phrase shown on the addition. This can help prevent spam from automated bots.installation : 1. Upload the wp-num-captcha folder to the...


Platforms: PHP

Show CAPTCHA protection on selected forms after specified number of unsuccessful form submit attempts has been made.You can control thresholds for CAPTCHA After submit threshold, flooding threshold (per machine IP) and global flooding threshold. You can also select for which CAPTCHA protected...


Platforms: PHP

The Egglue CAPTCHA module uses the Egglue Semantic CAPTCHA web service for generating over 10,000 knowledge-based, accessible CAPTCHA challenges on a Drupal site. The CAPTCHA module is required.For the example CAPTCHA challenges, correct responses can be 'spread' and 'play' or 'cut' and...


Platforms: PHP

Smart invisible captcha for wordpress comments. Visitors of your website don't need to enter letters and numbers. This small plugin automatically 100% protects your website from spam in comments..installation : 1. Upload file invisible-captcha.zip to the /wp-content/plugins/ directory and...


Platforms: Python

Django Simple Captcha is an extremely simple, yet highly customizable Django application to add captcha images to any Django form.


Platforms: *nix

miniBB (an abbreviation of "minimalist bulletin board") is a flat-type (not threaded) free web forum and discussion software, open source PHP bulletin board, written in PHP and using mySQL or another PHP-compatible database as data backend. But it's not from "yet one more bulletin board" series....


Platforms: PHP, MySQL

HIOX Captcha Image maker script can be used to create a random captcha image on every reload of the page. The image is created by using the combinations of 62 alphanumerical characters. This type of human authentication becomes necessary for form submission pages because only a human can copy...


Platforms: PHP

Hello Capttcha is a free PHP security system that can generate CAPTCHAs with animated images. It can send HTTP requests to the Web services API Web server of the HelloCAPTCHA site retrieve HTML to embed form fields and display an animated CAPTCHA image.This script can also send a request to...


Platforms: PHP

Services like Akismet and TypePad AntiSpam are great at detecting spam, but if you get lots of it then you have to trawl through the spam queue in case there are any false positives.This plugin provides a CAPTCHA complement to these spam detection plugins: * If a spam detection plugin identifies...


Platforms: PHP

This module provides a CAPTCHA which uses logic questions instead of standard visual or auditory challenges. This can help to improve the accessibility of CAPTCHAs, although it should be stated that no solution is perfect.The module uses the web service textcaptcha.com to provide logic questions...


Platforms: PHP

General InformationSweetCaptcha is a free Captcha service putting your users and your website at first priority. We are focused on enhancing the user experience on your website. Captcha services today are making life difficult for the user, and for the website owner by using an element on the...


Platforms: PHP

Anti-Captcha is a transparent captcha solution which does not require any end-user interaction. It is based on a nonce key, which is dynamically inserted using randomly generated (and obfuscated) javascript.The aim of this plugin is to prevent automated attacks (by bots) on the following...


Platforms: PHP

We are proud to announce our NEW AdEmbed feature that enables you to make extra cash $$$ with your blog!BotProof Captcha is a free anti-spam and anti-bot solution which uses a new and unique type of CAPTCHA. We offer a service that will change the way you think about protection from spam and...


Platforms: PHP

WP Captcha-Free blocks automated comment spam without resorting to CAPTCHAs. It does so by validating a hash based on time (and some other parameters) using AJAX when the form is posted. Comments posted via automated means will not have a hash or will have an expired hash and will be rejected....


Platforms: PHP

The Confident CAPTCHAd-OC?D? module is a unique, image-based CAPTCHA solution that stops spam and bots in a way that is easy and intuitive for your website visitors. Rather than forcing people to decipher warped and distorted characters or words, Confident CAPTCHA presents the visitor with a grid...


Platforms: PHP

Gab Captcha 2 is an efficient and simple captcha plugin for WordPress comments.It adds an easy turing test before each comment form. The turing test consist in typing the characters that appear emphasized and red in a text field. The plugin will add an entry in your WordPress administration area...


Platforms: PHP

Hidden CAPTCHA is an extension to the CAPTCHA module. It offers a hidden CAPTCHA (duh!)The idea is very simple: If you offer an input box in any form, 99% of the time, robots will fill it with something before posting the form. If you offer an input box that has to stay empty, then the CAPTCHA...


Platforms: PHP

reCAPTCHA is a hybrid mechanical turk and captcha that allows visitors who complete the captcha to assist in the digitization of books. From http://recaptcha.net/learnmore.html: reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in...


Platforms: *nix