Cheese - Cheese uses your webcam to take photos and videos, applies fancy special effects and lets you share...
Webcamoid - Webcamoid is a full featured webcam capture application.
Kamoso - Kamoso is a webcam recorder from KDE community.
MyCam - Record videos and take pictures with your webcam, open image or video files and apply with amazing photo filters and video effects.
GTK+ UVC Viewer - guvcview is a video viewer and capture software for the linux UVC driver.
wxCam - wxCam is a webcam application for linux.