OS X can do, it too :-) Insert a blank cd, and off it goes :-).
hdiutil burn image.iso
$ hdiutil burn KNOPPIX_V5.1.1CD-2007-01-04-EN.iso
Preparing data for burn
Opening session
Opening track
Writing track
..............................................................................
Closing track
..............................................................................
Closing session
..............................................................................
Finishing burn
Verifying burn...
Verifying
...............................................................................
Burn completed successfully
...............................................................................
hdiutil: burn: completed
Good old trusted linux does it with cdrecord :-)
cdrecord speed=2 dev=0,1,0 -data sol-9-install-sparc.iso
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