Cheese - Cheese uses your webcam to take photos and videos, applies fancy special effects and lets you share...
motionEyeOS - A Video Surveillance OS For Single-board Computers
Webcamoid - Webcamoid is a full featured webcam capture application.
iSpy - iSpy is software that allows the user to view and control video surveillance cameras. The software began development in 2007 and now has over 2 million users around the world, according to the software's website. Read more about iSpy.
Kamoso - Kamoso is a webcam recorder from KDE community.
Securityspy - SecuritySpy is a multi-camera video surveillance application for the Macintosh.