DBPrism is an open source framework to generate dynamic XML from a database. It connects Oracle databases with Apache Cocoon, providing a high performance DBGenerator with functionality such as parallel content aggregation and ESI cache protocol. It also includes a powerlful database oriented CMS built on top of Apache Cocoon2 and DBPrism.
Enzyme is an architecture for creating user-searching-user applications. Right now, it is primarily useful as a resume create/search and HR management system. However, it's potential uses are wide-ranging, and it offers PHP developers an alternative to relying on simple "keyword" searching systems.
Tof is a Web-based photo album. It is based on slooze, and additionally has viewing rights, picture rating and sorting by rate, indexing with keywords, picture upload through the Web, thumbnail creation, and multiple languages support. It is being developed with PostgreSQL, but should be easy to port to MySQL thanks to phplib.
XMLDB uses an RDBMS to persist arbitrary XML documents. Due to its storage mechanism, searching for and recalling documents is extremely quick. You can also perform XSL translation on documents with surprising speed. The library can be used in any program to store libxml2 documents. A PHP module is also included, making XMLDB into a complete three-tier Web application development suite.
123tkShop is an e-Business framework which allows small companies like giftshops, boutiques, bookshops, etc. to set up their own e-Commerce webshops without knowledge of any programming languages. Maintainance is done over an integrated Web interface. 123tkShop provides plugin-based extensibility for multiple languages and themes. The admin interface allows backups of database and table structures, and backups of the complete database with all data. An "Auto-Plugin-Detection" system makes it easy to develop and install new plugins. It uses the Smarty template engine.