Cheese - Cheese uses your webcam to take photos and videos, applies fancy special effects and lets you share...
Kamoso - Kamoso is a webcam recorder from KDE community.
Webcamoid - Webcamoid is a full featured webcam capture application.
Cameroid - Just like Photo Booth - exept is online. Have fun with your webcam. Apply text and funny effects.
Phoyo - Phoyo is a photo booth automation software.
QtCAM - QtCAM is free Open Source Linux Webcam software. Try Qt based Linux camera software application for security surveillance & communication. Capture videos from multiple cameras.