Linux Overview

Linux is the best-known and most-used open source operating system.  It is open source as its source code is freely available. It is free to use.

Linux distribution:

A Linux distribution, often shortened to Linux distro, is an operating system compiled from components developed by various open source projects and programmers. Each distribution includes the Linux kernel (the foundation of the operating system), the GNU shell utilities (the terminal interface and commands), the X server (for a graphical desktop), the desktop environment, a package management system, an installer and other services. 

1 Ubuntu

2 Debian

3 CentOS

4 Red Hat Enterprise Linux (RHEL)

5 Gentoo

6 Fedora

7 OpenSUSE

8 Scientific Linux

9 Cloud Linux

10 Elementary OS

11 Linux Mint

12 Arch Linux

13 Manjaro

14 Oracle Linux

15 Slackware

16 Mageia

17 Clear Linux

18 Rocky Linux

19 AlmaLinux