openSUSE is a free and Linux-based operating system for your PC, laptop or server. You can surf the web, manage your e-mails and photos, do office work, play videos or music. It is aimed towards users and developers working on the desktop or server.
Netfilter is a host-based firewall for Linux operating systems. It is included as part of the Linux distribution and is activated by default. This firewall is controlled by the program called iptables. Netfilter filtering takes place at the kernel.
The GNOME project provides two things: the GNOME desktop environment, an intuitive and attractive desktop for users, and the GNOME development platform, an extensive framework for building applications that integrate into the rest of the desktop.
Ubuntu is a fast, secure and easy-to-use operating system used by millions of people around the world. It scales from consumer electronics to the desktop, and into the cloud for enterprise computing. Ubuntu still is and always will be free to use.
Fedora is a fast, stable, and powerful Linux-based operating system for everyday use built by a worldwide community of friends. It is always free for anyone to use, modify and distribute.
An enterprise-class Linux distribution with an active and growing user community, quickly rebuilt, tested, and QA'ed errata packages, an extensive mirror network, responsive developers, multiple free support avenues including ...
An enterprise platform well-suited for a broad range of applications across the IT infrastructure. The latest release, Red Hat Enterprise Linux 6, represents a new standard for Red Hat by offering greater flexibility, efficiency, and control.
Debian is a free operating system (OS) for your computer. It uses the Linux kernel, but most of the basic OS tools come from the GNU project; hence the name GNU/Linux. It comes with over 29000 packages, precompiled software.