What is Moonshiner?
Moonshiner is a graphical frontend (GUI) for Ghostscript's PostScript-to-PDF converter. While Ghostscript (and its wrapper ps2pdf) is a very powerful instrument, it is quite challenging to use its parameters on the command line, especially if you (like me) often change the settings as to what kind of color conversion, image resampling etc. you want Ghostscript to perform.
While I have never used Adobe's Distiller, and thus cannot really compare the two, Moonshiner (as the name suggests) is supposed to be a work-alike for the Linux world – at least GUI-wise; the actual work is of course done by Ghostscript.
Moonshiner is released under the GNU GPL v3+, meaning it is free software that you can use, edit and distribute as you like (as long as you keep it under the same license).
Moonshiner is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
Please visit the Wiki for up-to-date information.