A Linux distribution (often abbreviated as distro) is an operating system made from a software collection, which is based upon the Linux kernel and, often, a package management system. Linux users usually obtain their operating system by downloading one of the Linux distributions, which are available for a wide variety of systems ranging from embedded devices and personal computers to powerful supercomputers.
It is available in many distros and flavours. Popular distros are -:
1. Debian - a non-commercial distribution and one of the earliest, maintained by a volunteer developer community with a strong commitment to free software principles and democratic project management . It is considered as most stable distro.
2. Fedora - a community distribution sponsored by American company Red Hat and the successor Red Hat Linux. It aims to be a technology testbed for Red Hat's commercial Linux offering, where new open source software is prototyped, developed, and tested in a communal setting before maturing into Red Hat Enterprise Linux.
3. openSUSE - a community distribution mainly sponsored by German company SUSE.
4. Ubuntu - a desktop and server distribution derived from Debian, maintained by British company Canonical Ltd. It has many flavours like KUbuntu, LUbuntu. This distro is most used on Desktop as it is very user friendly.
5. Chromium OS - the open-source project that is the development version of Chrome OS, now supported by the open-source community.
6. Chrome OS - Google's commercial operating system based on Chromium OS that only run on Chromebooks ,Chromeboxes and tablet computers ,Like Android ,it has Google Play Store and other Google apps.
7. Arch Linux - a rolling release distribution targeted at experienced Linux users and maintained by a volunteer community, offers official binary packages and a wide range of unofficial user-submitted source packages.