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]

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 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]

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]