Qastrocam is a capture program that can work with any video4linux device. Its main purpose is to do astrophotography. It can control a telescope to do guiding with the images received from the video device. It can also control the extended features of a webcam modified to do long exposure (several seconds) captures.
AstroMosaic is a small commandline program to help the creation of a mosaic (a big image that is a collection of smaller images). It can automatically find the best aligment of the images. Its main goal was to compose astronomical images from a Webcam. It can take any image format supported by Qt as input.