Starting with today's Eclipse build you can finally control OSGi services running inside Eclipse. Simply go to your favourite Plug-in registry view and Group view contents by Services.
Having done that, you should see all running services in one place, ordered by their names, with their properties and list of bundles using each service instance.
Using view filter it's now pretty easy to search for particular service or explore interfaces provided by different bundles.
The next step is to see the details of launched self-hosted Eclipse or OSGi instance.