If you have ever taken a look at the task manager, you may seen several svchost.exe processes running, though the process is the same, it actually runs several tasks for different purposes.
The Windows task manager does not show you details about each of the processes, so it get more confusing for the users.
Svchost Viewer is a small standalone application that shows you all the running svchost processes and the tasks they are running.
The software details various details about tasks/processes being run by individual svchost.exe process. The software is only 12.4 kbs in size and does not require any installation.