• The SPIDER Image processing package
• The CCP4 Protein Crystallography Suite
• The RasMol v2.6Manual
• The Raster3D Manual
• The X-PLOR Manual
• The MolScript Documentation
• The O v5.10 Manual and resources
• The XV v3.10a Manual
• The ImageMagick Manual
• GIMP (Gnu Image Manipulation Program) Documentation