Plugins is a key concept of fbl to extend its capabilities. FBL by itself distributed with handful plugins.
FBL distributed with few handful plugins:
FBL offers additional open source plugins that can be found by following the (link)[https://www.npmjs.com/org/fbl-plugins].
Additionally FireBlink is open to provide services to create specific closed source / open source plugins for your business needs.
Start with creating new plugin with project generator.
You can also review the source code of the default plugins as a starting point.