Disclosed are a method, system, and computer program product for implementing external domain independent modeling framework in a system design. In some embodiments, the method or system comprises importing an external model in an external format into the framework while substantially preserving some or all of the interpretation of the external model, determining a internal common representation for the external model within the framework, and displaying or storing the internal common representation in a tangible computer readable medium. In some embodiments, the method or system further comprises validating the accuracy of the internal common representation, determining an analysis or transformation capability for the framework, or outputting a first output model in a second external format. In various embodiments, the method or system requires no external tool compliance.