Bonsoir AAlaain,
en se rendant sur le site gosthscript, on peut lire ceci :
Ghostscript is a copyrighted work (artofcode LLC owns the copyright); it is not shareware or in the public domain.
Versions entitled GPL Ghostscript are distributed with the GNU General Public License, which allows free use, and free copying and redistribution under certain conditions (including, in some cases, commercial distribution). A supported commercial version is available from Artifex Software Inc.
Releases made prior to 2004 were part of the GNU project and were titled GNU Ghostscript; that project now maintains a fork. Versions prior to 8.54 were released first under a more restrictive license as AFPL Ghostscript.
Les deux versions sont donc bonnes, elles sont juste sous une licence différente. Par affinité, je pencherais plus vers la version GNU/GPL, mais tu es libre de choisir indifférement entre les deux.
Amicalement
L'homme n'est pas fait pour travailler et la preuve, c'est que ça le fatigue. (Marcel Proust)