1. CentOS：
CentOS 是由 CentOS 项目开发的 Linux 发行版。它最初于 2004 年 5 月 14 日发布。它为我们提供了红帽企业 Linux，这是一个免费且受社区支持的计算平台，在功能上与其上游源代码兼容。它基于 Fedora。
2. Ubuntu：
Ubuntu 是一个基于 Linux 的操作系统，由 Mark Shuttleworth 领导的“Canonical”团队开发。它属于 Linux 的 Debian 家族。它是开源的，可以免费使用。 “ubuntu”一词源自一个非洲词，意思是“对他人的人性”。中文版的Ubuntu用于运行世界上最快的超级计算机。谷歌的自动驾驶汽车使用的是 ubuntu 的精简版。
CentOS 和 Ubuntu 的区别：
| S.NO. | CentOS | Ubuntu |
|---|---|---|
| 1. | CentOS was developed by the CentOS Project (affiliated with Red Hat). | Ubuntu is developed by Canonical. |
| 2. | It is based on Fedora. | It is a Debian based OS. |
| 3. | It was initially released on 12 April 2007. | It was initially released in October 2004. |
| 4. | Its origin was in the USA. | Its origin was in the Isle of Man. |
| 5. | It uses yum package manager. | It uses apt package manager. |
| 6. | It is more stable as compared to Ubuntu. | It is less stable as compared to CentOS. |
| 7. | Good for businesses | Good for beginners |
| 8. | Github repository for centOS is https://github.com/CentOS |
Github repository of Ubuntu is https://github.com/ubuntu |
| 9. | The forum of CentOS is https://forums.centos.org/ |
The forum for Ubuntu is https://ubuntuforums.org/ |
| 10. | It comes with native KVM virtualization support. | It supports KVM and Xen virtualization. |