sabre/dav is a CalDAV, CardDAV and WebDAV framework for PHP
sabre/dav
PHP interface to Twitter Streaming API
Question2Answer is a free and open source platform for Q&A sites, running on PHP/MySQL.
Standards compliant HTML filter written in PHP
HTML Purifier - Filter your HTML the standards-compliant way! html filter that guards against xss and ensures standards-compliant output.
PHP implementation of Fowler's Money pattern. NOTE: all work is happening in the "nextrelease" branch, which will break BC.
Representing Money in PHP, Fowler-style independent software consultant
Markdown parser for PHP based on the CommonMark spec.
Introduction - CommonMark markdown parser for php based on the commonmark spec
PHP 5.3 SDK for the Dropbox REST API
Highly opinionated mocking framework for PHP 5.3+
The dependency injection container for humans
PHP-DI - The Dependency Injection Container for humans php-di is a dependency injection container for php that intends to be practical and powerful
A PHP library to support implementing representations for HATEOAS REST web services.
Hateoas - A PHP library to support implementing representations for HATEOAS REST web services.