mdf2iso is a very simple utility to convert an Alcohol 120% bin image to the standard ISO-9660 format, cue sheets, or TOC file.
http://freshmeat.net/projects/mdf2iso/
iGnus is a graphical frontend for Libburn, it's based on the GTK+ 2 b5i2iso is BlindWrite image to ISO image file converter cdi2iso is a very simple utility to convert DiscJuggler image to the standard ISO-9660 format.