Rational Rose was a development environment for Unified Modeling Language.

It integrates with Microsoft Visual Studio .NET and Rational Application Developer.

The Rational Rose family of products is a set of UML modeling tools for software design.

[1] However, other UML tools are also capable of this, including Borland Together, ESS-Model, BlueJ, and Fujaba.

[5] As of 2024[update] IBM no longer sells Rational Rose, with all mentions except support pages being removed from the website.