eXept Software AG - Home of Smalltalk/X, and other products and services. - http://www.exept.de/
Genify: Smalltalk MT - Compiled Smalltalk. Design and deploy fastest Smalltalk applications available, head-to-head with C/C++, no compromise. Many samples, subscription library for serious development. Build Web servers, free-threaded COM components, multi-threaded DLLs and EX - http://www.genify.com/
ChiMu Corp. - Develops software and provides various consulting and training services, for Java and Smalltalk, to help build better information systems. Specialty: high-quality, object-oriented architectures and frameworks. - http://www.chimu.com/products/index.html
Applied Thought Corp. - Specialty: pure object-oriented software consulting, design, and development services. If you need Smalltalk programmers, Applied Thought is highly qualified. Download our game for your Palm Pilot. - http://www.appliedthought.com/
Crafted Smalltalk - A supplier of quality tools for the smalltalk developer. - http://www.craftedsmalltalk.com/