This is the Haiku server process acting as the foundation of the semantic layer.
> make
> generated/sen_server &
You can use SEN Tracker to navigate Related files using the context menu "Open Related...".
Together with the ontologies in ONI (Ontology Native Interface), you can start to explore the magic of a truly semantic desktop, managing all your real-world and virtual objects, abstract entities and ideas as files.
Other use cases and plugins are currently under development.