XMIPP is an image processing suite for 3D-reconstruction of biological specimens from transmission electron microscopy data. NOTE that stable releases (including binaries) are longer stored at Sourceforge, but are available at http://xmipp.cnb.csic.es
Traffic Sucks. CamGet is a bash script to download images from area traffic camera websites (such as http://www.dpwt.com). This script also adds timestamps to each image, converts image to desired format, and attempts to 'normalize' each image.
grafix: SGML-based scientific diagram editor, can do arbitrary user-defined transformations of input data, data interpolation by several methods, and curve fitting to arbitrary user-defined functions; generates PostScript (EPS) output