Packagist is the main Composer repository. It aggregates public PHP packages installable with Composer.
array_column() implementation for PHP versions earlier than 5.5
A tiny set of array functions missing from the PHP core
HTML5 support for HTML Purifier
LaTeX parser and renderer
A WordPress plugin that provides a special URL for accessing Post Thumbnails by their corresponding Post ID
Composer installer for Zend Framework 1 modules
A ZF1 module that provides better translations for validation messages