The Symfony PHP framework

Dependency Manager for PHP

Guzzle, an extensible PHP HTTP client

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

The PHP Unit Testing framework.

A PHP parser written in PHP

A pure PHP library for reading and writing spreadsheet files

PHP Email address validator

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.

Doctrine Object Relational Mapper (ORM)

Eases the creation of beautiful and testable command line interfaces

Doctrine Database Abstraction Layer

Comprehensive mailing tools for PHP

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

Library that provides collection, processing, and rendering functionality for PHP code coverage information.

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

PSR-7 HTTP message library

Doctrine Cache component

Promises/A+ library for PHP with synchronous support

Converts CSS selectors to XPath expressions

Provides tools to ease debugging PHP code

The purpose of this PSR is to provide a set of common interfaces for HTTP messages as described in RFC 7230 and RFC 7231

Annotations Docblock Parser