Chrome no longer requires users to be signed into a Google account to install apps from the Chrome Web Store.
In effect as of Google Chrome 37 on Windows, Mac, Linux and Chrome OS, the change enables free Chrome Apps and extensions to be installed by anyone, regardless of whether they have a Google account or not.
Naturally there are benefits to being signed in and these will remain compelling for most (synchronisation of apps and settings between devices, being one).
But the removal of the requirement will open up access to more people, particularly those who use Chrome but don’t have or need a Google account.
Paid apps and extensions are not affected and still require a user to be logged in. Those browsing from a Guest or supervised/managed account will still find restrictions on what can and can’t be installed remain in place.