Linux Distributions Explained: How to Choose the Right Distro
“Which Linux should I use?” has an honest answer: it depends on what you want to do, because Linux is only the kernel, and a distribution (distro) is a complete system built around it. Distros differ in how they install software, how often they update, how long they are supported and who stands behind them. This guide explains the main families, compares the well-known distros for servers, desktops and learning, and gives a short decision guide.
What a distribution is
A distribution bundles the Linux kernel, the GNU and other core tools, a package manager (which installs and updates software), an installer, default configuration and often a desktop environment. The same software (nginx, PostgreSQL, Python) is available on all of them; what differs is the packaging, the release policy and the support. You can read how it came about in the history of Linux.
The main families
| Family | Package format and tool | Members | Character |
|---|---|---|---|
| Debian | .deb, apt |
Debian, Ubuntu, Linux Mint, Kali, Raspberry Pi OS | Huge software catalogue, community-driven (Debian) or commercially backed (Ubuntu) |
| Red Hat | .rpm, dnf |
RHEL, Fedora, Rocky Linux, AlmaLinux, CentOS Stream | Enterprise focus, long support cycles, common in corporate data centres |
| SUSE | .rpm, zypper |
SUSE Linux Enterprise, openSUSE | Enterprise and SAP workloads, strong in Europe |
| Arch | pacman |
Arch Linux, Manjaro, EndeavourOS | Rolling release, minimal base, do-it-yourself |
| Independent and specialised | Varies | Alpine (containers), NixOS, Gentoo, Slackware | Focused designs: tiny images, reproducible builds, source-based |
Release models
- Fixed release with long-term support (LTS): Ubuntu LTS is released every two years and gets five years of standard security maintenance for its main repository (Ubuntu Pro extends coverage to more packages and adds years; personal use on a few machines is free); Debian stable is supported for several years; RHEL and its clones are supported for about ten years. Best for servers, where you value stability over new features.
- Fixed release, short cycle: Fedora releases roughly every six months and each release is supported for about a year, giving you newer software.
- Rolling release: Arch and openSUSE Tumbleweed continually update packages, so you get the latest software but more chance of changes breaking something.
Popular choices compared
| Distro | Good for | Notes |
|---|---|---|
| Ubuntu (and Ubuntu Server) | Beginners, desktops, cloud servers | The most widely documented; LTS versions are the default on many cloud images |
| Debian | Stable servers, people who prefer a community distro | Conservative, very stable packages |
| Linux Mint | Switching from Windows | Ubuntu-based with a familiar desktop |
| Fedora Workstation | Developers who want current software | Upstream for RHEL, with fast adoption of new technology |
| RHEL, Rocky Linux, AlmaLinux | Enterprise servers | RHEL is commercial with support; Rocky Linux is a free rebuild of RHEL and AlmaLinux is a free distribution that aims for RHEL binary compatibility |
| openSUSE / SLES | Enterprise and admin tooling (YaST) | Leap is stable, Tumbleweed is rolling |
| Arch Linux | Advanced users who like control | Excellent wiki, but expect to configure everything yourself |
| Alpine Linux | Containers and tiny systems | Uses musl libc and BusyBox, so some software needs adjustment |
| Kali Linux | Security testing | A specialised toolbox, not for daily use; see our Linux overview |
How to choose
- Learning Linux for the first time, or running a small VPS: Ubuntu LTS or Debian. You will find an answer to almost every question online.
- Working in a company that uses Red Hat: learn the Red Hat family. Rocky Linux or AlmaLinux are free ways to practise.
- Desktop replacement for Windows: Linux Mint, Ubuntu or Fedora.
- Containers: Alpine or a minimal Debian or Ubuntu base image for images; pick the host OS by your operations team’s skills.
- Want to understand the system deeply: Arch Linux, or a Debian install by hand, on a virtual machine.
In all cases, choose a release that still receives security updates, and turn on automatic security updates on servers. The hardening advice in the SSH hardening checklist applies to any of them.
Try before you commit
- Run a distro in a virtual machine (VirtualBox, VMware, Hyper-V) or with Windows Subsystem for Linux:
wsl --install -d Ubuntu. - Boot a “live” USB image, which runs without installing.
- Check
cat /etc/os-releaseon any Linux system to see which distro and version it is.
Common questions
Is Ubuntu the same as Linux?
Ubuntu is one distribution. Linux is the kernel that all distributions share.
What happened to CentOS?
The traditional CentOS Linux, a free rebuild of RHEL, ended with CentOS 8 in December 2021, and CentOS 7 ended in June 2024. CentOS Stream is now an upstream development branch for RHEL, and Rocky Linux and AlmaLinux are the most popular free replacements.
Can I switch distros later?
Yes. Keep your data on a separate partition or back it up, and note that your skills largely transfer, with mainly the package manager and paths differing.
