PHTML Encoder encodes PHP scripts before distributing them. The script code is encrypted before saving. PHTML Encoder includes console and GUI versions of the converter. You can lock your scripts to a predefined machine via machine ID, and can combine protected/unprotected scripts on one website.
phpWebHacks is an advanced HTTP client written in PHP, a utility for HTTP scripting. It simulates a real Web browser, but you use it with lines of code rather than a mouse and keyboard. It uses pure PHP; no Curl or other fancy dependencies are needed. You can build scripts in minutes: a GMail/Yahoo/MSN contacts grabber, a YouTube video downloader, an HTTP mailer, and many more.