Software for viewing, converting and processing space image data

• eLynx Lab
  Windows & Linux image processing tools. Supports the conversion of gray images with the Bayer matrix.
• Free Software for Planetary Science
  Tools for viewing and processing Mariner, Venera, Viking Orbiter, and Cassini Orbiter image data; finished images can be saved in BMP or FITS format; by Piotr Masek
• GIMP
  Popular image editor
• ImageJ
  Java-based image processing package. (Please note that there are concerns about the security of Java.)
• IMG2PNG
  Command-line program for converting entire folders of PDS formatted files to PNG; removes reseau marks from Voyager, Viking, Mariner 9 and Mariner 10 images; by Björn Jónsson
• IrfanView
  Popular graphic viewer; by installing the plugins package, IrfanView supports the JPEG 2000 format
• j2k
  A free Photoshop and After Effects plug-in for reading and writing the JPEG 2000 file format
• JPG Deinterlace
  Small GUI-based standalone program for deinterlacing JPEG files; provides excellent results; no installation required, just unpack the ZIP file
• PDS Reader
  Plugin for ImageJ; opens and displays PDS image files
• SmillaEnlarger
  Open source graphical tool to resize, especially magnify images in high quality
• The ESA/ESO/NASA FITS Liberator
  Standalone and open source image processing software for FITS files
• VICAR Open Source
  NASA’s image processing software system; for Linux, Mac OS X, and Solaris.

Image stitching software

• AutoStitch
  Capable of stitching panoramas completely automatically, whether horizontal or horizontal and vertical.
• Creating panoramas with PanoTools and PTGui
  A basic guide for using PanoTools together with PTGui. In German language.
• Hugin
  A useful cross-platform GUI for Helmut Dersch’s Panorama Tools
• Panorama Tools Download by Max Lyons
  From this page you can download the files from Dersch’s Panorama Tools used by PTAssembler
• PTAssembler
  A helper program for Helmut Dersch’s Panorama Tools
• PTGui
  A panoramic stitching software for Windows and Mac OSX

Terragen

• Michiel de Boer's Terragen Site
  A personal homepage with a lot of Terragen galleries
• Planetside
  The Home of Terragen – a photorealistic 3D landscape rendering software

3D computer graphics

• Blender
  Open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback.
• Blender-HiRISE-DTM-Importer
  Modified version of the original HiRISE DTM importer addon that will work with Blender 2.8+ This plugin imports a HiRISE DTM that is formatted as a PDS IMG file, reads the embedded PDS label and decodes the raster elevations to create a mesh.
• Blender-LRO-MGS-Importer
  Modified version of the original LRO and MGS DEM importer addon that will work with Blender 2.8+ This plugin imports a DEM of the Moon (LRO) or from Mars (MGS), reads the embedded PDS label and decodes the raster elevations to create a mesh.
• Christoph's Page – Rendering planets
  Rendering the Earth and other planets by using POV-Ray; website by Christoph Hormann
• POV-Ray – The Persistence of Vision Raytracer
  A high-quality, free tool for creating 3D graphics
• Views of the Earth – artificial images of our real planet
  by Christoph Hormann