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NuCaptcha is a free captcha service that uses motion video to authenticate human web interactions.

Compared to image-based captchas, it is a harder-to-recognize solution for bots and can be read easier by humans which is great.

With the help of an API, NuCaptcha can be implemented into any website (sample codes provided) and there is also a WordPress plugin offered.

The captchas can be customized in means of skin, background and message displayed which helps a better visual integration with the websites.

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LOG.ME.IN is a free PHP user management script for easily protecting site content and displaying it to only registered users.

It is also an instant solution for creating the common membership modules like sign-up, login or "forgot password".

The script uses MySQL as the database and has a web-based installer for a quick installation.

LOG.ME.IN has a strong focus on security: it is integrated with reCAPTCHA, performs a safe session handling and SQL injection/XSS proof.

And, it has a back-end to manage users (listing, editing and deleting them).

Special Downloads:
Ajaxed Add-To-Basket Scenarios With jQuery And PHP
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ScheduledTweets

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Tutorialzine is sharing a nice tutorial with source on creating a fancy Ajaxed contact form that is built with jQuery & PHP.

The form is unobtrusive & has a server-side validation which makes it degrade gracefully when the JavaScript is turned off.

It takes advantage of 2 jQuery plugins:

• formValidator – for validation
• JQTransform – for stying input fields

and a PHP class:

• PHPMailer – for sending the e-mails

The contact form also has a basic captcha which works by asking the sum of 2 random numbers.

To check a demo of the form, click here.

Special Downloads:
Ajaxed Add-To-Basket Scenarios With jQuery And PHP
Free Admin Template For Web Applications
jQuery Dynamic Drag’n Drop
ScheduledTweets

Advertisements:
Professional XHTML Admin Template ($15 Discount With The Code: WRD.)
Psd to Xhtml
SSLmatic – Cheap SSL Certificates (from $19.99/year)