Stamp is a command-line program which will process a greyscale jpeg image,
such as one produced by a greyscale Quickcam. It can add a graphical (and
configurable) timestamp to the image. Stamp can also upload the timestamped
image via FTP, with the configuration of a stamprc file. It also features a
"quad" option which will take the latest image and composite it with up to
three previous images, while timestamping the latest one.

WWW: http://stamp.sourceforge.net/