Indeed CDBurnerXP is a good alternative to NERO but is not the same, Nero has many other bundled applications which allows you to edit audio files, dvds, etc. If you are limiting to burning option, it could be an alternative. Open Office or Libre Office which is the same application but splited from Oracle as an alternative to Microsoft Office Mozilla Firefox as an alternative to Microsoft Outlook Ant Movie Catalog, InfraRecorder, Keepass, InkScape, Recuva and many others which can replace some of the actual payable applications.