Packagist is the main Composer repository. It aggregates public PHP packages installable with Composer.
A simple and easy to use ORM for PHP.
PHP Object Graph Mapper for Neo4j
Simple character mapping class
Edifact Data Mappings in xml
A simple php database object relational mapping package.
ORM for PHP
Propel is an open-source Object-Relational Mapping (ORM) for PHP5. This fork tries to add support for Pervasive DB.
Forms mapping and validation of Doctrine ORM entities for Nette Framework
The GraphQL Mapper Symfony Bundle
A GraphQL model mapper
A data mapper ORM for your persistence model (not your domain model).
factory php library
Command-line interface for Atlas.
A Symfony2 bundle providing a flexible mechanism for object-to-object mapping (and back)