Convert Nero's
nrgdisk images to standardisoISO-9660 images.
Original author of this code is Grégory Kokanosky, to whom all the credits for this code belong.
nrg2iso is available in some popular GNU/Linux distributions' official repositories:
Original source code of nrg2iso is available on Grégory's website, and now on GitHub, mainly for posterity, and accessorily for the purpose of the undisk-app.
Publishing on GitHub simplifies processes like automatic download-and-build the sources. An example of that is nrg2iso-bin, a modularized version of nrg2iso (usable with Node.js), which can compile this code on-the-fly when installed.
You can grab the latest untouched version (0.4) found on SourceForge, from our 0.4 release.