QtCAM is e-con's open source Linux webcam software. This Qt Ubuntu camera software application provides easier user interface for capturing and viewing video from devices supported by Linux UVC driver. It would also work with any V4L2 compatible device.
Cheese - Cheese uses your webcam to take photos and videos, applies fancy special effects and lets you share...
FotoFlexer - FotoFlexer is the most powerful online photo editor in existence.
Kamoso - Kamoso is a webcam recorder from KDE community.
piZap - Free online photo editing software.
Webcamoid - Webcamoid is a full featured webcam capture application.
Fun Photo Box - FunPhotoBox is a free photo editing device where you can make clever pictures from your photographs.