The Symfony PHP framework

Dependency Manager for PHP

Sends your logs to files, sockets, inboxes, databases and various web services

Open Source PHP Framework (originally from EllisLab)

A PHP parser written in PHP

Loads environment variables from `.env` to `getenv()`, `$_ENV` and `$_SERVER` automagically.

Doctrine Inflector is a small library that can perform string manipulations with regard to uppercase/lowercase and singular/plural forms of words.

Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.

The PHP deployment tool with support for popular frameworks out of the box

Doctrine Object Relational Mapper (ORM)

Eases the creation of beautiful and testable command line interfaces

Doctrine Database Abstraction Layer

A PSR-5 based resolver of Class names, Types and Structural Element Names

Defines an object-oriented layer for the HTTP specification

Provides tools that allow your application components to communicate with each other by dispatching events and listening to them

Finds files and directories via an intuitive fluent interface

Provides a structured process for converting a Request into a Response

Doctrine Cache component

Symfony polyfill for the Mbstring extension

Maps an HTTP request to a set of configuration variables

Annotations Docblock Parser

The Doctrine Event Manager is a library that provides a simple event system.

Collections Abstraction Library

Doctrine Common