I've identified this Windows service:
Service Name: MSCRMAsyncService
Display Name: Microsoft CRM Asynchronous Processing Service
What others are created from CRM install?
As far as Windows services, Dynamics CRM 4.0 only installs the Asynchronous Service.
If you install the Dynamics CRM Email Router, then the Windows service Microsoft CRM Email Router is installed.
From a web service perspective, there are: