Arcavias is an e-commerce framework for Web shops, consisting of an e-commerce library, an administration interface, and different frontends. It's a modular stack which offers flexibility and speed. Unlike other Web shops, it's not a monolithic application. Instead, you have a choice between several user frontends, and you can adapt them to your needs or write one of your own.
Probus is a Web framework for developing in PHP5. This framework is based on the MVC pattern. It has excellent support data caching and provides convenient AJAX support. This framework supports the following features: Many programming patterns can be used, include MVC. A simple command-line tool is used to generate projects. Standard plugins are included for AJAX, RSS, and form validation. It is simple create new plugins for Probus. Its database abstraction layer supports MySQL, PgSQL, MSSQL, Oracle, and many others. It automatically caches data. Its configuration system uses YAML syntax. Components can be used from external frameworks such as Zend Framework, symfony, Code Igniter, Kohana, and CakePHP.
Zend Framework is a framework for PHP 5 that is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile code base. It is focused on building more secure, reliable, and modern Web 2.0 applications and Web services, and consuming widely available APIs from leading vendors like Google, Amazon, Yahoo!, and Flickr, as well as API providers and cataloguers like StrikeIron and ProgrammableWeb.
jFramework is a PHP framework that supports internationalization best practices, fast NIST 2 RBAC, optimized multi-database drivers, URL management, MVC best practices, certified security, incredible performance, full support for Web 2.0 including Comet, simple yet powerful templates, many plugins, an administration Web interface, options, a profiler and benchmarker, and much more.
phpDays is a flexible PHP 5 framework for rapid Web site development. It features an MVC architecture, Ajax support, YAML configuration, database abstraction (MySQL, PostgreSQL, MS SQL, etc.), a good collection of standard models, an excellent quick start guide, and logging to files or firephp.