Ad hoc home networking system present on Windows 7 and higher which allows users' libraries, along with individual files and folders, to be shared between multiple computers.
Homegroup is an ad hoc home networking system added to Windows 7 and above. Homegroup uses a password to join computers into the group, and allows users' libraries, along with individual files and folders, to be shared between multiple computers.
Only computers running Windows 7 or higher can access or join a HomeGroup. For more details: