digiCamControl - A DSLR camera remote control open source software Features:
ControlMyNikon - ControlMyNikon is the THE BEST tethering software for Nikon DSLR's!
qDslrDashboard - Camera tethering as easy as 123!
Entangle - Entangle provides a graphical interface for “tethered shooting”, aka taking photographs with a...
CaptureGRID - Photos & Graphics
DSLR Remote Pro Multi-Camera - DSLR Remote Pro - software to control Canon DSLR cameras from a PC