Web Tools

acrobat Adobe Acrobat: when possible, I have tried to include .pdf files, which can be viewed with the free Acrobat reader.
ghostscript Ghostscript: a utility for viewing and printing Postscript files. You might also want to obtain Ghostview (for Unix) or GSview (for Windows or Mac), a useful interface for previewing these files. Each is free but must be downloaded and installed.