Fedora:

The Fedora Project is an openly-developed project designed by Red Hat, open for general participation, led by a meritocracy, following a set of project objectives. The goal of The Fedora Project is to work with the Linux community to build a complete, general purpose operating system exclusively from open source software. Development will be done in a public forum. The project will produce time-based releases of Fedora Core about 2-3 times a year, with a public release schedule. The Red Hat engineering team will continue to participate in building Fedora Core and will invite and encourage more outside participation than in past releases. By using this more open process, we hope to provide an operating system more in line with the ideals of free software and more appealing to the open source community.

Knoppix:

Knoppix is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. Knoppix can be used as a Linux demo, educational CD, rescue system, or adapted and used as a platform for commercial software product demos. It is not necessary to install anything on a hard disk. Due to on-the-fly decompression, the CD can have up to 2 GB of executable software installed on it.

Mandrake Linux:

Mandrake Linux was created in 1998 with the goal of making Linux easier to use for everyone. At that time, Linux was already well-known as a powerful and stable operating system that demanded strong technical knowledge and extensive use of the "command line"; MandrakeSoft saw this as an opportunity to integrate the best graphical desktop environments and contribute its own graphical configuration utilities and quickly became famous for setting the standard in ease-of-use and functionality. With this innovative approach, MandrakeSoft offers all the power and stability of Linux to both individuals and professional users in an easy-to-use and pleasant environment. Thousands of new users are discovering Linux each and every day and finding it a complete replacement for their previous operating system. Linux as a server or workstation has no reason to be jealous of any other more established operating systems.

RedHat Linux

Red Hat is the leader in development, deployment, and management of Linux and open source solutions for Internet infrastructure - ranging from embedded devices to secure Web servers. Red Hat was founded in 1994 by visionary entrepreneurs Bob Young and Marc Ewing. Open source is the foundation of our business model. It represents a fundamental shift in how software is created. The code that makes up the software is available to anyone. Developers who use the software are free to improve the software. The result: rapid innovation. Red Hat solutions combine Red Hat Linux, developer and embedded technologies, training, management services, technical support. We deliver this open source innovation to our customers via an Internet platform called Red Hat Network. Red Hat is headquartered in Raleigh, North Carolina, USA.

SuSE Linux Professional

SUSE LINUX is the international technology leader and solutions provider in Open Source operating system software. SUSE's unique expertise in Linux and its largest development team worldwide dedicated to Open Source software has contributed to the recognition of SUSE as the most complete Linux solution available today. With a workforce of more than 500 people worldwide, SUSE has offices throughout Europe, Latin America and in the United States, entirely focused on supporting the Linux community and Open Source development. SUSE LINUX was acquired by Novell, Inc in November 2003.

Xandros Linux

Xandros has created a desktop solution that combines the best of open source technologies with a corporate attention to completeness, usability, and support. Version 1 of the Desktop product was based on the award winning Corel LINUX OS and represents the next step in the evolution of the Corel desktop. Based in Ottawa, the Xandros team includes the world-renowned developers and architects of the award winning Corel LINUX OS. Xandros has inherited a sizeable user base from Corel LINUX OS from which it is significantly expanding its market presence. Xandros is currently developing its direct and indirect distribution channels for corporate, government, home, and educational users world wide. Xandros has established a world class technical support team. Xandros is also developing an extensive professional services presence to enhance its capabilities to support relationships with larger clients and partners.