MPC + MadVR for the most part.

MPC and VLC

Km player and Potplayer on PC

VLC media player (Videolan) the best with simple UI and powerful features.
Its updating regularly is also one of the reason I use VLC.

Another VLC convert here. It has never failed me, and I've always liked the no-frills GUI.

VLC. Always has, always will

I use VLC

I usually use MPV, it works better than VLC imo

I use Kodi

I use Plex. I have used Plex since it's infancy and have watched it grow to be a fantastic resource for everything. If anybody has any questions or issues with it, I would be more than happy to help.