A repack of XnView MP for Void Linux. Unfortunately, only x64 (AMD64, x86_64), since XnSoft only releases x64 deb packages for Linux.

The package also contains the keygen that is needed to register the software. The keygen is a Windows binary (.exe), so you'll also need to have Wine installed in order to run it. It's located in /opt/XnView/Keygen. If you would rather not use Wine or not have it installed, there is also a generated serial number shared in the same directory in Serial.txt. The problem is, you can't choose the name under which the software will be registered, but if that doesn't bother you, yeah, just use the pregenerated serial number.

A Void Linux repack. The serial is embedded in the package (check the releases page). Though it's an old release from Ahead/Nero AG (about 10 years), it still works on most distros. No BluRay support though, only CD/DVD.

You can get the Debian package (.deb) file from the xbps-src template (distfiles=http://download.link/to/file.deb, replace ${version} with 4.0.0.0 in the URL). There are only x86 and x64 builds available (they did't release builds for any other architecture). The serial is in the sed command in the template file, in case you would like to install/repackage it for another distro. You need to change the serial in /etc/nero/config in order to register the application system wide.