Utilities
Plex Media Server →
Create your own Netflix for free. You can convert your personal PC to a media server that you can use to watch different movies and shows.
SpaceSniffer →
A great tool to keep your disks clear and clutter free, gives you a understandable overview (it has a GUI) of your disks usage. It's really awesome.
Malwarebytes →
Yeah I know anti-malware applications ARE SO 2012 but hear me out, Malwarebytes is a great option.