is there a way to check whats on your hd?

hey all, wondering if theres way see on hard drive? want see taking "used space" on hard drive. more detailed, want see if never downloaded or installed on hard drive. spyware etc maybe taking space.

 

disk inventory x

 

Forums Macs Notebooks MacBook Pro

• iPhone
• Mac OS & System Software
• iPad
• Apple Watch
• Notebooks
• iTunes
• Apple ID
• iCloud
• Desktop Computers
• Apple Music
• Professional Applications
• iPod
• iWork
• Apple TV
• iLife
• Wireless