- Arcturus Networks - Linux-based embedded systems, real-time and high availability solutions.
- ChyGwyn Limited - Linux kernel and open source software development and consultancy.
- Cyclades - Multiport serial cards, routers, communication adapters, and remote access servers.
- Eridani Star System - A Red Hat variant Linux distribution, kept as up-to-date as possible. Other popular distributions and older versions also available.
- Everything Linux Australia - Offers 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.
- Guardian Digital - Consulting, installation, support and computer-security services to businesses.
- I.D.E.A.L. Technology - Linux-based computer systems, installation, migration, training, support, service, application programming, performance tuning.
- 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.
- KrystalBox Technologies, Inc. - Linux, open source solutions, support, service.
- Linux and HP - Products include servers and clusters. News, documentation, product information, and event calendar.
- Linux Applications and Servers - Business and server applications from IBM. Websphere, DB2, Domino and Small Business Suite for Linux.
- Linux Central - Products include books, applications, distributions, hardware, and merchandise.
- Linux Generation B.V. - Works with Debian GNU/Linux, firewalls, embedded Linux applications, broadband Internet.
- LinuxForce, Inc. - Provides software, support, services, news to Linux market; promotes Debian GNU/Linux, home of AdminForce Remote.
- LinuxIT - UK based firm providing Linux systems, software and support to corporate and individual clients. SuSE, Red Hat, Mandrake, other distributions.
- QSR: Q Software Research Corp. - Philippine-based firm specializing in product development and consulting in Linux and open source.
- Scyld ClusterWare - High performance computing solutions based on Open Source systems such as Linux Beowulf clusters.
- 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.
- Starnix, Inc. - Professional Linux and Unix goods, services, support, training.
- SuperAnt CD-ROMs - Resources for computing on systems with limited memory. Online vendor of Linux distributions, application software, and Linux and DOS software collection CDs.
- Terra Soft Solutions - Privately held corporation who's primary market position is to advance the abilities and usership of PowerPC Linux.
- 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.
- Wiresoft - Secure server platforms and artificial intelligence-based server management services to simplify networks, and cut maintenance, software licensing costs. Firegate is 1st Linux server OS to be self-managing, can be used by non-Linux administrators in small, mid-size businesses (SMB).
- X/OS - Consulting services, software development, Linux support and systems.
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