The Professional Edition of Microsoft Visual C++ version 6.0 provides features that let you develop and distribute commercial-quality software products.
The Professional Edition includes the following features (see the Visual C++ Documentation Map for another high-level look at the Visual C++ product):
Programming Features
The Internet
ActiveX Controls
Project Features
Optimizations
Database Support
See Also
Comparison Chart of Features in Each Edition
What's New for Visual C++ Version 6.0?