VLC Media Player
It can be quite maddening for Windows users when one tries to open a video or audio file, and it just doesn't work
PhotoScape
Most Windows users find that their photo editing requirements are not so small that an image viewer would suffice
ManyCam
Some Windows users find a simple webcam feed quite limiting in many scenarios
CapCut
Once upon a time, video editing was either very professional, high-end, or just very basic, with only a few features