OSMC
The OSMC (Open Source Media Center) is probably the most feature rich media center software. Currently, it is the easiest software to use with Pi device for a media center option. It is the best for the general users who are beginners in the technical field and who are new to the media centers.

It is based on Kodi (formerly known as XBMC) media center but has easier functionality
It has a clean interface and a completely different look than Kodi, which will not make you confused
The left aligned menu helps you to choose the media to play, change the settings, and to check other programs
It supports various Debian based Kodi plug-ins to support DIY projects
FTP, SSH, Samba Sharing, etc. are the other forms supported by OSMC for the tinkerers