Arcturus Networks
Linux-based embedded systems, real-time and high availability solutions.
CodeWeavers, Inc.
The company behind the Wine project and creators of Crossover Plugin, enabling Windows-based plugin for Linux such as Quicktime and Shockwave Director.
Everything Linux Australia
Linux-compatible hardware, distributions, fuzzy penguins, applications, and training programs. International delivery available.
General Technics Rackmount Computers
Linux rack mount hardware required for applications such as Industrial PCs, RAID Enclosures, data acquisition, and process control projects.
IBM Linux Portal - Linux at IBM
Overview on many projects where IBM uses and implements Linux for its customers and also related software and documentation can be found here.
QSR: Q Software Research Corp.
Philippine-based firm specializing in product development and consulting in Linux and open source.
ShaoLin Microsystems Ltd.
Offers training courses, technical consultation services for Linux application developers. Products for Linux platform enabling, clustering, storage and system availability markets…
Specialized Systems Consultants, Inc. (SSC)
Publishes full-size computer books and pocket references on Linux, Unix, Internet; and Linux Journal magazine.
VA Software Corp.
Support services and software for Linux operating environment. Develops, maintains, sells SourceForge.
Warped Systems
Distributor of commercial and GPL'd Linux/BSD distributions, games and books. Also provides custom built and preloaded Linux Workstations and Servers.