Ghostscript [SEP] license
, Atari TOS and AmigaOS.
History.
Ghostscript was originally written by L. Peter Deutsch for the GNU Project, and released under the GNU General Public License in 1986. Later, Deutsch formed Aladdin Enterprises to dual-license Ghostscript also under a proprietary license with an own development fork: "Aladdin Ghostscript" under the Aladdin Free Public License (which, despite the name, is not a free software license, as it forbids commercial distribution) and "GNU Ghostscript" distributed with the GNU General Public License. With
since February 2013, under the GNU Affero General Public License which is a free software license.
- GNU Ghostscript is part of the GNU project and is now derived from GPL Ghostscript.
- GPL Ghostscript is the basis for Display Ghostscript, which adds Display PostScript functionality support.
- Ghostscript is the current commercial proprietary version licensed by Artifex Software for inclusion in closed-source products.
- Ghost Trap is a variant of GPL Ghostscript secured and sandboxed using Google Chrome's sandbox technology.
- ESP Ghostscript was