Cam View
Display up to two Windows DirectShow cameras simultaneously
This program can display up to two Windows DirectShow cameras. It is pretty lightweight because it uses direct access to DirectShow Windows API.
Recomended "ball" test camera: https://sourceforge.net/projects/direct-show-demo-filters/
Alternative location (Penguin seems to crash): http://78.108.103.11/~fojtik/CamView/