Bioconductor is a set of packages for R (a GPLd statistical data analysis language) which focus on bioinformatics data analysis, especially gene expression arrays (Affymetrix, cDNA spotted arrays). There are tools for statistical normalization, differential expression, genomic visualization, and biological annotation. Future work includes implementation and development of better statistical methods, distributed computing, visualization, and extensions to related high-throughput laboratory assays. The primary developers are research statisticians.
OsiriX is an image processing software dedicated to DICOM images produced by medical equipment (such as MRI, CT, PET, and PET-CT) and confocal microscopy (LSM and BioRAD-PIC format). It can also read many other file formats: TIFF, JPEG, PDF, AVI, MPEG, and Quicktime. OsiriX is able to receive images transferred by DICOM communication protocol from any PACS or medical imaging modality. OsiriX has been specifically designed for navigation and visualization of multimodality and multidimensional images.
ImageJ is an image processing program inspired by NIH Image for the Macintosh. It can display, edit, analyze, process, save, and print 8-bit, 16-bit, and 32-bit images. There are modules for biology, astronomy, nuclear medicine, physics, and more. If you can take a picture of something, whether with a microscope, a telescope, an oscilloscope, an xray machine, or a scanner, then this program will let you enhance, manipulate, and measure the results.