Which license is right for me?

Ghostscript is available under both an Open Source AGPL license and Commercial license. Please visit artifex.com/licensing/ to understand the differences in these licensing agreements, or to acquire a commercial license.

AGPL Logo
GNU Affero General Public License
Arifex Logo
Artifex Commercial License
MuPDF 1.13.0 for Windows 32 bit MuPDF AGPL Release MuPDF Commercial License
MuPDF 1.13.0 for Android
MuPDF on Google Play MuPDF Commercial License
MuPDF 1.13.0 Source
for all platforms
MuPDF AGPL Release Note 1 MuPDF Commercial License

Old releases available here: http://mupdf.com/downloads/archive