Second-generation Products
In 1990, Rational launched three parallel development efforts: re-implementation of the Rational Environment (for Ada) to run on Unix-based workstations from Sun and IBM, development of a comparable Rational Environment for C++ to run on Unix-based workstations from Sun and IBM, and development of a workstation-hosted modeling tool called Rose that supported a graphical notation developed by Grady Booch. Apex, the Rational Environment for Ada, was launched on Sun and IBM Unix platforms in 1993, and the Rational Environment for C++ followed on the same platforms a year later. A version of Apex that ran on Microsoft Windows NT was successfully developed and released by Rational's Bangalore team.
Rose 1.0 was introduced at OOPSLA in 1992, but performed poorly in multiple dimensions and was withdrawn from the market.
The development of Rose 2.0 combined a Windows-based Booch notation editor called Object System Designer (acquired from Wisconsin-based Palladio) with a new intermediate representation, and with new semantic analysis, code generation, and reverse engineering capabilities. The latter, which allowed prospective customers to analyze existing C++ code to produce "as-built" navigable class diagrams, helped overcome Rational's late re-entry into the market for object-oriented modeling tools. Rose 2.0 ran on Windows PCs and on several Unix-based workstations.
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