The Object-oriented Reuse Tool (ORT) supports the reuse of object-oriented software by maintaining a library of reusable classes and recording information about their reusability as well as information associated with their design and verification. In the early design phases of object-oriented development, ORT facilitates reuse by providing a flexible way to navigate the library, thereby aiding in the process of refining a design to maximally reuse existing classes. A collection of extensions to ORT have also been identified. These extensions would compose the remainder of a system useful in increasing reuse in object-oriented software production.