ZoneMinder - ZoneMinder is a free and open-source piece of security software that can be used at home or in your business. The software puts you in control of all of your data, and it is exceptionally easy to setup. Read more about ZoneMinder.
Webcamoid - Webcamoid is a full featured webcam capture application.
Blue Iris - Blue Iris is a high end security monitoring system that lets you view and control the feeds from all the cameras at your home or place of business.
Kamoso - Kamoso is a webcam recorder from KDE community.
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.
Cameroid - Just like Photo Booth - exept is online. Have fun with your webcam. Apply text and funny effects.