A full featured PHP code encryptor. It also encrypts HTML and code generated by PHP scripts for complete protection. It support password protect, IP limit or set an expiry date for scripts. [Commercial]

Compiled-code PHP encoding tools. Offers both a standalone encoder and an online service for uploading scripts or archives and receiving encoded files in return. [Commercial]

Encrypts PHP and HTML code, making it nearly impossible for hackers and code thieves to steal, duplicate, and distribute encrypted scripts or web pages. [Commercial]

Small tool for publishing PHP code and obfuscate: all files will be in one, the code is unreadable. [Commercial]

Uglify PHP code by eliminating white spaces, linefeeds and comments. Demo for Win32 and Linux-i386-glibc2.2 available for download [Commercial]

A tool for removing unnecessary data (spaces, comments and etc.) from PHP, HTML and JavaScript files, resulting in shorter execution, downloading/uploading time.

An opensource PHP obfuscator. [Open source GPL]

Reviews of alternative PHP obfuscation/encryption/encoding software.

Tools to scramble PHP source code to prevent reverse engineering while preserving functionality; no change to PHP runtime environment.

Obfuscation and encryption for PHP Files. [Shareware]

Protects PHP applications for secure deployment, without exposing the source code. [Commercial]