Faker is a PHP library that generates fake data for you

Guzzle, an extensible PHP HTTP client

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

The PHP Unit Testing framework.

A simple PHP API extension for DateTime.

Better Markdown Parser in PHP

A tool to automatically fix PHP Coding Standards issues

PHP errors for cool kids

Effective June 1, 2021: Phabricator is no longer actively maintained.

wallabag is a self hostable application for saving web pages: Save and classify articles. Read them later. Freely.

ARCHIVED

High performance, full-stack PHP framework delivered as a C extension.

Mobile_Detect is a lightweight PHP class for detecting mobile devices (including tablets). It uses the User-Agent string combined with specific HTTP headers to detect the mobile environment.

PHP package for JWT

Event-driven, non-blocking I/O with PHP.

CakePHP: The Rapid Development Framework for PHP - Official Repository

[WordPress] A foundation for WordPress Plugin Development that aims to provide a clear and consistent guide for building your plugins.

A pure PHP library for reading and writing word processing documents

The Roundcube Webmail suite

PHP Secure Communications Library

CRON for PHP: Calculate the next or previous run date and determine if a CRON expression is due

Documentation Generator for PHP

Xdebug Profiling Web Frontend in PHP

A Mustache implementation in PHP.

PHPCI is a free and open source continuous integration tool specifically designed for PHP.

PHP Language Specification

PHP Compatibility check for PHP_CodeSniffer

Declaratively specify how to extract elements from a JSON document, in PHP

A slim PHP wrapper around wkhtmltopdf with an easy to use and clean OOP interface

A one-page opcache status page