An administrator in windows 10 is the account that could change option's that a guest user for example does in't have access to. For
Example: When a guest user tries to download a software via a guest account it will be asked to put a administrator password to be able to downlaod the software.
Dropbox
Mozilla Firefox, Google Chrome
Gmail, Mozilla Thunderbird
CDburnerXP
Putty, Netflix,
Paint.net, Filezilla
Image editing tools like photoshop and GIMP?