Cincom Smalltalk - An object-oriented application development environment that enables large organizations to quickly develop and maintain complex component-based applications. (Cincom Systems).

Codagen Technologies Inc. - Develops gen-it, a family of code generators which allows generation-time control and customization for integrating frameworks with components developed using Java, C++, and Smalltalk..

Cunningham & Cunningham, Inc. - A small consultancy specialized in object-oriented programming and pattern languages, located in Portland, OR..

eXcelon Corporation - Provider of data management software for applications built using XML, C++ and Java, that maximizes flexibility, speed, scalability and run-time availability..

Hitachi Software - Provides a range of CORBA based products and services for scalable, fault-tolerant applications..

Informate International - A European software house specialised in object technologies..

NiSUS Technologies Inc. - A software and hardware company that provides development, research, and consulting services..

Persistence Software, Inc. - Developers of application servers for C++ and Enterprise JavaBeans based on object-relational mapping, object caching and proactive notification..

Project Technology, Inc. - Home of the Shlaer-Mellor Method. Also now getting on board with UML..

Wyde Inc. - Developers of enterprise object-oriented specification and development tools..