Software development for the LHC experiments has already started using methods traditionally used in HEP for many years. The experience from this software indicates that the software to be used during LHC operation should be done on a different basis.
The MOOSE Collaboration (RD41@CERN) has been established to study the viability of the Object Oriented approach for software development for High Energy Physics reconstruction and analysis code at the LHC. MOOSE: