Beginning with Mirantis OpenStack 6.0, Fuel features the ability to install plugins along with your environment.
Fuel plugins are downloadable software components that enable you to add new capabilities to your environments in a flexible, repeatable and reliable manner.
There is no need to install drivers and patches manually after Fuel deploys your cloud – plugins do this for you.
You can download several of these plugins right now, and you can even build them yourself, if you have specific deployment needs.

DriverLog with all Fuel Plugins: http://stackalytics.com/report/driverlog?project_id=openstack%2Ffuel
User Documentation: http://docs.openstack.org/developer/fuel-docs/userdocs/fuel-user-guide/plugins/hot-plugable.html
Development Documentation:http://docs.openstack.org/developer/fuel-docs/plugindocs/fuel-plugin-sdk-guide.html
Mailing list: openstack-dev with [fuel][plugins] prefix
IRC channel: #fuel-dev