POP - Persistent Objects for PHP - is a library intended to make simple ORM for the main databases existent in the market - PostgreSQL, MS SQL, Oracle and MySQL. Complete OO and making use of PDO, it also secures your project against SQL Injection
Flexoodb stands for Flexible Object Oriented Database API. Using your choice of RDBMS, Flexoodb represents objects as XML, allows proprietary Serializable objects to be embedded within the XML representation and manipulation using extended classes.
Xtirer is a lightweight, easy to deploy solution to get formatted output from MYSQL Database by only defining the objects, their data source and optional data manipulation without writing a line of code.