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.
piZap - Free online photo editing software.
Cheese - Cheese uses your webcam to take photos and videos, applies fancy special effects and lets you share...
Photoshop.com - Photoshop.
Kamoso - Kamoso is a webcam recorder from KDE community.
Fun Photo Box - FunPhotoBox is a free photo editing device where you can make clever pictures from your photographs.
Webcamoid - Webcamoid is a full featured webcam capture application.