KM3KM3 or Kernel Meta Meta Model is a neutral computer language to write metamodels and to define Domain Specific Languages. KM3 has been defined at INRIA and is available under the Eclipse platform.Related Concepts Model-driven architecture, Model Driven Engineering Domain Specific Language Domain-specific modelling Model-based testing Meta-modeling ATL XMI OCL MTL MOF Object-oriented analysis and design Kermeta