What is Linux?

Linux is a free, fast, secure, and private alternative to Windows. It powers most of the internet, the world’s supercomputers, Android phones, and millions of desktops. Best of all — it’s completely free, has no spy- or bloatware, and gives you full control of your computer.


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A Marvel of Global Goodwill

In 1991, a 21-year-old Finnish university student named Linus Torvalds posted the following on the comp.os.minix newsgroup:

“I’m doing a (free) operating system (just a hobby, won’t be big and professional like GNU)…”

His modest announcement — and the fact that he immediately released the source code — sparked an online (and soon global) community almost overnight. Enthusiastic programmers from around the world jumped in, contributing code, bug fixes, drivers, documentation, and ideas. What began as a hobby project became a powerful rallying cry for free software, user sovereignty, and collaborative development — an escape from the locked-down, proprietary worlds of Windows and commercial Unix.


That small hobby project evolved into the Linux kernel, which now powers the vast majority of the world’s computing infrastructure. It runs on more devices than any other operating system in history: from the world’s fastest supercomputers to smartphones, cloud servers, routers, cars, TVs, and the majority of the internet.


What makes Linux uniquely powerful is the license it adopted: the GNU General Public License (GPL), often called “copyleft.” Unlike traditional copyright (“all rights reserved”), copyleft uses copyright law against itself. It says:

Anyone can use, study, modify, and distribute the code. But, if you distribute a modified version, you must release your changes under the same license — free for others to use, study, and improve.

This single rule created a powerful virtuous cycle. Improvements made by IBM, Red Hat, Intel, Google, Huawei, or individual hobbyists don’t disappear into private products — they flow back into the common pool. The result is the largest, most sustained collaborative project in human history: tens of thousands of developers, millions of lines of code, and decades of continuous improvement, all protected from being taken private.

Why haven't I heard of Linux?

Linux has quietly become one of the most successful pieces of software ever created — powering the vast majority of the internet, supercomputers, smartphones (Android), and more. On the desktop, it’s also making real strides: modern Linux interfaces are polished, highly customizable, and often more intuitive and enjoyable than Windows or macOS. Yet, to many people, Linux remains obscure or unknown.


Why isn’t it more widely known and used on everyday computers?



Bottom line: Linux stayed under the radar because it evolved organically to meet the needs of a global community, not a corporate roadmap. Free from marketing blitzes, hardware lock-in, and profit-driven haste, it matured into something genuinely better — more secure, more efficient, and remarkably stable. More people discover it every day.

How Linux Actually Works

All Linux systems share the same rock-solid heart: the Linux kernel. Think of the kernel as the engine of a car — it’s the core part that makes everything run smoothly and reliably.


On top of this engine, thousands of independent developers create the pieces you actually see and use — things like:



Different groups of people then choose their favorite pieces, carefully combine them, test everything thoroughly, and release complete, ready-to-use packages called distributions (or “distros” for short).


These groups include:



This vibrant ecosystem runs on friendly competition and collaboration. Developers are motivated not by profit or strict deadlines, but by the joy of creating software that millions of people will love and use every day. The result is continuous improvement, excellent choices for users, and an extraordinary level of freedom.

Linux as a Windows Alternative

For most people, Linux can be a smooth drop-in replacement for Windows. Once you find the apps you like and set it up, it tends to stay fast, stable, and trouble-free for many years.


At the same time, Linux is more than just an operating system — it’s a philosophy and a global community. It gives you real choice and freedom. You don’t have to dive deep into it… but you can if you want to. Many users start simple and gradually explore more over time.

Top Beginner-Friendly Distros

The following are among the most popular and approachable distros in 2026. You can try any of these with a minimum of fuss, completely free and without risk.

A distro is just your starting point. Linux is extremely modular — you can add, remove, or change almost anything. With enough customization, one distro can even be made to feel and behave very much like another.


Honourable mentions for specific needs:

CachyOS — blazing performance & gaming
Debian — ultimate long-term stability

All distros are completely free and quick to download. You can try any via a Live USB, without losing your files.

Desktop Environments — Change the Look & Feel

One of the coolest things about Linux is that you can completely change how your desktop looks and works — without changing your distribution.

A desktop environment is the graphical interface (taskbar, menus, windows, icons, etc.). You can swap it like changing the skin on your phone.

Here are the most popular ones:

Most distros let you install multiple desktop environments and choose which one to use at login. This is why one distro can feel very different from another even though they share the same core.

What About My Windows Programs?

Important note: Windows programs do not run natively on Linux. You generally have two options:

  1. A native Linux version of the program (if it exists)
  2. A free alternative built from the ground up for Linux (sometimes several great choices for the same app)

The good news is that 99% of everyday tasks are very well covered — often with excellent, modern, and free software that doesn’t require subscriptions.

Here are the most common replacements:

Popular apps like Spotify, Steam, Discord, Netflix, Slack, WhatsApp, and many others already have excellent native Linux versions.

Looking for more alternatives? AlternativeTo.net is an outstanding website to find Linux replacements for almost any Windows or Mac program.

Ready to see it for yourself?
→ Try Linux right now (no installation needed)

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