Если вы используете composer для обработки зависимостей вашего проекта, вам следует попробовать:
php composer.phar show --installed
OR
php composer.phar show -i | grep doctrine
И на выходе будет что-то вроде:
doctrine/annotations v1.1.2 Docblock Annotations Parser
doctrine/cache v1.3.0 Caching library offering an object-oriented API for many cache backends
doctrine/collections v1.2 Collections Abstraction library
doctrine/common v2.4.1 Common Library for Doctrine projects
doctrine/data-fixtures v1.0.0 Data Fixtures for all Doctrine Object Managers
doctrine/dbal 2.3.4 Database Abstraction Layer
doctrine/doctrine-bundle v1.2.0 Symfony DoctrineBundle
doctrine/doctrine-fixtures-bundle v2.2.0 Symfony DoctrineFixturesBundle
doctrine/inflector v1.0 Common String Manipulations with regard to casing and singular/plural rules.
doctrine/lexer v1.0 Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.
doctrine/orm 2.3.5 Object-Relational-Mapper for PHP