Capitolsoft
- A software development company dedicated to providing software tools for Visual C++ and a Microsoft .NET based framework.
- http://www.capitolsoft.com/

Codejock Software
- Provider of custom Visual C++ MFC development solutions and services for Windows Desktop Applications.
- http://www.codejock.com

Tech-X Corp.
- Developer of free and commercial C++ class libraries, high-performance C++ applications, distributed solutions via JAVA/CORBA/C++, JAVA applets and Python tools.
- http://www.txcorp.com/

Perennial, Inc.
- Leading supplier of C and C++ compiler validation test suites. Provides validation testing services for C, C++, and POSIX conformance.
- http://www.peren.com/

Boost Consulting
- Dedicated to support and development services for the Boost libraries and associated tools. The Boost libraries are a peer-reviewed, open collaborative development effort.
- http://www.boost-consulting.com/

Semantics Consulting
- Training, consultation, and mentoring from Steve Dewhurst, an internationally-recognized expert in C++, design patterns, and object-oriented analysis and design.
- http://www.semantics.org/

Pointbreak
- Freelance C++ consultancy, training, and mentoring.
- http://www.pointbreak.biz/

Plum Hall, Inc.
- A leading supplier of C and C++ technical textbooks, validation test suites, libraries, and quality assurance tools.
- http://www.plumhall.com/

Glen McCluskey & Associates LLC
- An objected-oriented technology firm, specializing in the C++ and Java programming languages.
- http://www.glenmccl.com/

ObjectQuest Software
- Offers the ObjectQuest Advisor which analysis C++ classes and produces architectural models, reports, and comparisons against object oriented standards.
- http://www.object-quest.com/

PAC Software
- Developer of CD-ROM based C, C++, Windows programming tutorial titles.
- http://www.cdlearning.com/

XVT Software Inc
- Develops and markets award-winning, client/server GUI software development tools and Internet/Intranet solutions. Provides products and services for C, C++, Java and MFC development.
- http://www.xvt.com/

Rogue Wave
- Producer of tools++.h and other class libraries
- http://www.roguewave.com/

Gimpel Software
- Makers of PCLint software for checking C/C++ for many correctness rules - especially involving inter-module consistency and headers.
- http://www.gimpel.com/