PHP script encoder and trialware creator with a graphical interface with several editions available. The website also offers a web-based free PHP encoder accessible through a free membership as well as support through a newsletter and forum. [Commercial]

Obfuscates PHP code as well as the HTML output. Supports password protection, IP restriction, and the setting of expiry dates. Website also offers FAQs, demos, and a detailed explanation on how the encryption is performed. [Commercial, Free trial]

Open source PHP and JavaScript obfuscator featuring renamings, concatenations comment deletions. Code no longer being maintained. Website offers advantages and disadvantages, debugging tips and sample usage. [Open Source, GPL]

Obfuscates PHP code while providing full control over the obfuscation process. The software obscures strings and removes whitespaces and comments. Featured in the website are screen shots, sample obfuscations, FAQs and contact information. [Commercial]

Offers both a standalone download as well as an online service for encoding PHP scripts. Site features testimonials, commercial partners and support through request tickets and a forum. [Commercial, Free trial]

Eliminates white spaces, line feeds and comments from PHP and JavaScript code with a command line tool. Features an online live test with an uploaded PHP file. [Commercial, Demo version available]

Online PHP encoder with client management and licensing system. Knowledge base includes online support, user manual, sample code, and a demonstration of use. [Free for personal/non-commercial]

Renames variables, removes comments and white spaces from PHP files. Offered through Google Code with wiki information and known issues. [Open source, GPL]

Converts PHP source code into unreadable bytecodes for Windows, Linux and Mac OS X. Website also includes full documentation and free loaders for supported platforms. [Commercial, Free trial]

Offers a free PHP obfuscator for Windows. Contains sample code, developer and support information as well as information about the design company. [Open Source, GPL]