Dunstan Thomas
- Provides software architecture, design (OOA/D, UML), and development preocess consulting services in the UK and Europe.
- http://www.dthomas.co.uk/dtalm/

Langr Software Solutions
- A consulting and training firm specializing in Java and Smalltalk, object-oriented development, and agile methods such as XP.
- http://www.langrsoft.com/

Pugh-Killeen Associates
- Provides training, mentoring, analyzing, designing, reviewing and consulting services for OO (Java, C++, C#) software development.
- http://www.pughkilleen.com/

Pallene Ltd.
- Offer consulting in process engineering with RUP and OO analysis and design with UML. Located in London, United Kingdom.
- http://www.pallene.com/

Derman Enterprises Incorporated
- We provide expertise to help software development teams become proficient with (Rational) Unified Process (RUP), Use Cases, Object-Oriented Analysis and Design (OOAD), Unified Modeling Language (UML) and Software Architecture.
- http://www.derman.com/

Neco Software Development Support
- Neco's services on software development support, including training, methodological support and software component development.
- http://www.neco-ti.com/sds/DefaultEN.asp

Metamaxim
- They provide behaviour-based executable modelling tools and consultancy.
- http://www.metamaxim.com/

Empulsys
- A company in the Netherlands that helps organizations improve their software development capability. They provide consultancy services on the Rational Unified Process and software development capability assessment.
- http://www.empulsys.com/

David Van Camp - Object-Technology Consulting
- Independent consultant specializing in Object Technology, offering articles and presentations on Design, Patterns, Design Principles, Reuse, Software Process Improvement, RUP, XP, C++, Java, and PowerBuilder.
- http://davidvancamp.com/