Zend Guard enables the protection and mass distribution of commercial PHP applications.

kerberos script provides basic Kerberos bindings for ruby which allow authentication.

Random Image Generator script, when used with forms, prevents form automation by scripts and programs by requiring the user to type in a random key.

As3 Crypto Framework is a cryptography library written in Actionscript 3 that provides several common algorithms.

MCrypt is a replacement for the old crypt() package and crypt(1) command, with extensions.

Stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server.

QuickCert SSL Certificate Generator allows you to quickly and easily create SSL certificates.

Scapy is a powerful interactive packet manipulation program.

OpenSSL represents a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3).

Zend Optimizer allows you to run encoded files and enhance the performance of your PHP scripts.

Zorex PHP CryptZ is the solution for encoding and protecting your PHP scripts.

submitTroughImage is a small but usefull spam/flood form submit protection that uses CAPTCHA.

PHP Firewall Generator is a simple PHP script that generates a firewall for iptables or ipchains.

Securimage CAPTCHA Class is a highly customizable PHP CAPTCHA image class for generating CAPTCHA images to prevent programs from filling out your forms.

iScramble is a PHP script that allows you to protect any section of your HTML code.

POBS replaces user-defined (NOT predefined) functions, constants and variables with a MD5 key of 8 characters

Generic PHP Password Protection is a PHP script that offers easy to install, secure password protection.

CodeBreak - Hidden Morse Code

SourceGuardian for PHP is the ultimate protection solution for encoding and protecting your PHP scripts.

Hotlink Reverser Pro is an advanced script that changes the names of your content files and the links on your web pages on a regular basis.

SafeHTML is an anti-XSS HTML parser, written in PHP.

Login-Only 2.2 - admin-Login-Only software lets you easily add password protected pages to your website using just PHP.

Cryptomak is collection of php script for encrypting and decrypting messages (plain or encrypted text).

Simple Protect script check login / password before authorize a visitor to see a page.

phpSecurePages is a PHP module to secures pages with a login name and password.