Syntax Desktop is a publishing system used to manage the contents of a Web site. GPL

Syntax Desktop 2.5.1
It has an attractive GUI with DHTML elements. You can use it to insert news, photos, documents, and tree data structures into your site. It features easy DB backup and style switching.

Roadsend PHP produces optimized stand alone applications, libraries, and Web applications from standard PHP source code. LGPL

Roadsend PHP 2.9.6
The compiler produces native machine code, not PHP byte code, so no interpreter is required. It is a new implementation of the PHP language and runtime environment compatible with Zend PHP. It does not share any code with the original PHP implementation.

PHP5 framework which helps you to develop any kind of Web application. LGPL

Jelix 1.0.3 is designed to provide high performance on heavily-loaded Web sites. It is fully object oriented, highly modular, and extensible. It is made with well-known design pattern such as MVC and DAO. It natively supports many output formats, including XHTML, XUL, RSS, ATOM, RDF, ZIP, XML, and PDF. Jelix eases Web service development. It includes a powerful form system to create all kinds of forms, including CRUD forms.

System that will enable you to design your Web site the way you want. GPL

phpns 2.2.0
You can include a dynamic CMS with one line of code.

PHP library that gives developers a widget set for creating Web applications without HTML coding. GPL

phpWF 0.6.2

MVC framework for PHP with a built-in templating engine. GPL

Mac's PHP MVC Framework 0.6.0 comes with an integrated, AJAX-driven, flat file CMS solution. It was made with future extendability in mind. It is easy to install, easy to use, and has a very short learning curve. It also comes bundled with many PHP and JavaScript libraries. The framework generates SEF (search engine friendly) URLs right out of the box.