Packagist is the main Composer repository. It aggregates public PHP packages installable with Composer.
Harmony Composer plugin
A skeleton to start a new HarmonyCMS project
HarmonyCMS WebProfiler Bundle
Dwoo is a PHP5/PHP7 template engine which is (almost) fully compatible with Smarty templates and plugins, but is written from scratch for PHP5, and adds many features.
Abandoned! See twig/twig
A PHP7 object-oriented wrapper of the cURL extension
Abandoned! See php-http/httplug
PHP7 Client & WebHook wrapper for GitHub API v3
Abandoned! See knplabs/github-api