Opensource printing system tool. ESP Ghostscript is an up-to-date GNU Ghostscript distribution including bug fixes, new drivers, and additional support for CUPS. CUPS used to provide a customized version of GNU Ghostscript 5.50 to support non-PostScript printers. The customized filter, called pstoraster, was used by the sample drivers in CUPS, the GIMP-print CUPS drivers, and the drivers in ESP Print Pro. With the increasing number of Linux distributions shipping, or considering shipping CUPS as their standard printing system, we have had many requests to provide patches to the standard GNU Ghostscript source distribution so that they can ship a single version of Ghostscript. ESP Ghostscript is a customized version of Ghostscript currently based off GNU Ghostscript 7.07. ESP Ghostscript includes an enhanced autoconf-based configuration script, the CUPS raster driver to support CUPS raster printer drivers, and additional patches and drivers from various Linux distributors.