1. I Introduce Myself My Name is A.Mohammed Adam Im Doing My 3year B.E(Cse) in Mailam Engineering3year B.E(Cse) in Mailam Engineering College.College. Im Activist in Free Software Foundation Tamilnadu(FSFTN).

2. Linux desktop environment Mate KDE Cinnamon Unity GNOME Shell Xfce LXDE Debian 3. Mate The MATE Desktop Environment is the continuation of GNOME2. It provides an intuitive and attractive desktop environment using traditional metaphors for Linux and other Unix-like operating systems. MATE is under active development to add support for new technologies 4. Which distributions support MATE? MATE is available via the official repositories for the following Linux distributions: Arch Linux Debian Fedora Gentoo Linux Mint Mageia openSUSE PCLinuxOS PLD Linux Point Linux Sabayon Salix Ubuntu 5. KDE KDE a desktop environment provided as the default working environment on many Linux distributions, such as openSUSE, Mageia and Kubuntu and is default desktop environment on PC- BSD, a BSD operating system 6. Mageia 2 KDE Mint 14 KDE Sabayon 10 KDE Kubuntu 12.10 Mint 13 KDE Slackel 14 KDE Kubuntu 12.04.1 LTS Kororaa 17 Chakra Archimedes 2012.07 KDE Distributions Fedora 17 KDE Bridge KDE Manjaro 0.8.3 KDE PCLinuxOS 2012.08 KDE ROSA 2012 Marathon KDE Slackel KDE 4.9.2 OpenSUSE 12.2 KDE 7. Cinnamon Cinnamon is a GTK+ 3-based desktop environment. The project originally started as a fork of the GNOME Shell, i.e. a mere graphical shell. Cinnamon was initially developed by (and for) the Linux distribution Linux Mint. Because the Cinnamon desktop environment intends to implement a different graphical user interface (GUI) than GNOME desktop environment, many of the GNOME Core Applications were forked, so that their GUIs can be rewritten appropriately. Cinnamon 2.2 running on Linux Mint 17 (Qiana) 8. Unity Unity is a graphical shell for the GNOME desktop environment developed by Canonical Ltd. for its Ubuntu operating system. Unity debuted in the netbook edition of Ubuntu 10.10. It was initially designed to make more efficient use of space given the limited screen size of netbooks, including, for example, a vertical application switcher called the launcher, and a vertical space saver multipurpose top menu bar. Unlike GNOME, KDE Software Compilation, Xfce, or LXDE, Unity is not a collection of applications but is designed to use existing programs. 9. GnomeShell GNOME Shell is the official user interface of the GNOME desktop environment. It features a top bar holding (from left to right) an Activities button, an application menu, a clock and an integrated system status menu.The application menu displays the name of the application in focus and provides access to functions such as accessing the application's preferences, closing the application, or creating a new application window. The status menu holds various system status indicators, shortcuts to system settings, and session actions including logging out, switching users, locking the screen, and suspending the computer. run on multiple operating systems, its main focus being those based on the Linux kernel 10. Debian Debian systems currently use the Linux kernel or the FreeBSD kernel. Linux is a piece of software started by Linus Torvalds and supported by thousands of programmers worldwide. FreeBSD is an operating system including a kernel and other software. Debian is especially popular among advanced users because of its technical excellence and its deep commitment to the needs and expectations of the Linux community. Debian also introduced many features to Linux that are now commonplace. package management system 11. Distro For Begineers Linux Mint 17 Ubuntu 14.04 Zorin OS 8 Pinguy OS 14.04 LTS Peppermint OS 4 12. Distro for Business Enterprise CentOs Oracle Linux RedHat Enterprise Linux SUSE Linux Enterprise Destop Univention Corporate Server WhiteBox Enterprise Linux 13. Distro For Pentration Testing Backtrack 5r3 Kalilinux NodeZero BackBox Linux Blackbuntu Samurai WebTesting Framework Knoppix STD Pentoo Bugtraq Matriux Krypton DEFT 14. Distro For Students(Educational Purpose) BOSS Linux(Bharat Operating System Solutions) UberStudent Edubuntu Trisquel GNU/Linux ALT Linux SuliX 15. LightWeight Os PuppyLinux Lubuntu LXLE BodhiLinux CrunchBangLinux AntiX TinyCoreLinux WattOS ReactOS SliTazGNU/Linux VectorLinux DamnSmallLinux LegacyOS GALPonMiniNo 16. Thank U Very Much