NotORM - http://www.notorm.com/
NotORM is a PHP library for simple working with data in the database. The most interesting feature is a very easy work with table relationships. The overall performance is also very important and NotORM can actually run faster than a native driver.
Requirements: PHP 5.1+ any database supported by PDO (tested with MySQL, SQLite, PostgreSQL, MS SQL, Oracle)
Usage:
application()->order("title") as $application) { // get all applications ordered by title echo "$application[title]\n"; // print application title echo $application->author["name"] . "\n"; // print name of the application author foreach ($application->application_tag() as $application_tag) { // get all tags of $application echo $application_tag->tag["name"] . "\n"; // print the tag name } } ?>