The Symfony PHP framework

Dependency Manager for PHP

Sample code for several design patterns in PHP 8.x

Firefly III: a personal finances manager

The PHP Unit Testing framework.

A PHP parser written in PHP

Yii 2: The Fast, Secure and Professional PHP Framework

PHP Static Analysis Tool - discover bugs in your code without running it!

PHP errors for cool kids

Effective June 1, 2021: Phabricator is no longer actively maintained.

Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs.

Self-hosted CMS platform based on the Laravel PHP Framework.

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

PHP_CodeSniffer tokenizes PHP files and detects violations of a defined set of coding standards.

Instant Upgrades and Automated Refactoring of any PHP 5.3+ code

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

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

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

Assertions to validate method input/output with nice error messages.

Which is the fastest web framework?

PPM is a process manager, supercharger and load balancer for modern PHP applications.

The most awesome validation engine ever created for PHP

Phan is a static analyzer for PHP. Phan prefers to avoid false-positives and attempts to prove incorrectness rather than correctness.

Fast request router for PHP

A non-blocking concurrency framework for PHP applications. 🐘

[DEPRECATED -- Use Symfony instead] The PHP micro-framework based on the Symfony Components

Parser for Markdown and Markdown Extra derived from the original Markdown.pl by John Gruber.

Xdebug — Step Debugger and Debugging Aid for PHP

PHP Curl Class makes it easy to send HTTP requests and integrate with web APIs