The Eclipse QVT Operational component is an implementation of the Operational Mappings Language defined by Meta Object Facility™ (MOF™) 2.0 Query/View/Transformation™ (QVT™). In long term, it aims to provide a complete implementation of the operational part of the standard.
Operational QVT project provides a powerful Eclipse IDE:
The Eclipse VIATRA framework supports the development of model transformations with specific focus on event-driven, reactive transformations. Building upon the incremental query support, VIATRA offers a language to define transformations and a reactive transformation engine to execute certain transformations upon changes in the underlying model.