vvvv ships with a range of video tracking nodes, all implementated as FreeFrame plugins.

ARTK  (FreeFrame DShow9)
Implemenation of the ARToolkitPlus library for tracking of AR markers. Returns transformation of multiple markers in space.

CamShiftTracker (FreeFrame DShow9)
Color adaptive mean shift tracker. implementation of OpenCVs cvCamShift function. returns position(x/y), width, height and rotation angle of tracked objects. can track multiple objects of different colors at the same time.

ColorTracker (FreeFrame DShow9)
returns position(x/y), width, height and rotation angle of tracked objects. for tracking image is thresholded by given colors and tolerances for hue, saturation and brightness. can track multiple objects of different colors at the same time.

Contour (FreeFrame DShow9)
returns points(x/y) along contours found in the thresholded input image. additionally returns the individual contours positions, sizes and rotation angles

DetectObject (FreeFrame DShow9)
implemenation of OpenCVs cvHaarDetectObjects function for patter/object (e.g. face) detection

FiducialTracker (FreeFrame DShow9)
tracks fiducial markers and returns their position and orientation in the image

Trautner (FreeFrame DShow9)
simple movement detection in regions defined via a grayscale bitmap. based on an idea by mr. trautner -> brainsalt.net

Also see the Tracking Tools section on video software links for other tracking software that can communicate with vvvv.