KDE

Contents

Quick Snapshot

• Founded: 14 October 1996
• Founder: Matthias Ettrich
• Website: kde.org

KDE is an international free software community that develops free and open-source software. While they make a lot of things, they are most famous for creating the Plasma Desktop, which is the default interface for many Linux distributions (including the Steam Deck).

If the Linux world had a "maximinlist" philosophy (as opposed to minimalist), it would be KDE. Their motto seems to be: "Why have one setting when you can have twelve?"

Products

KDE Plasma

KDE Plasma Desktop 6.5 on openSUSE

Quick Snapshot

• Written in: C++, QML
• License: GPL 2.0 or later
• Website: kde.org/plasma-desktop

KDE Plasma is the flagship graphical shell. Out of the box, it looks vaguely familiar to refugees from Windows—taskbar at the bottom, start menu on the left, clock on the right.

The Superpower: Customizability. You can make Plasma look like Windows 11, macOS, a tiling window manager, or a cyberpunk dashboard from the year 3000. You can download "Wobbly Windows" to make your windows jiggle like jelly when you move them. Why? Because you can. Unlike GNOME, which tries to stop you from breaking things by hiding options, Plasma hands you the keys to the bulldozer and says, "Good luck."

KDE Gear (The Apps)

KDE doesn't just give you a desktop; they give you a tool for literally everything. Collectively, this suite is called KDE Gear.

The most defining feature of these apps is the naming convention. If a word starts with 'C', replace it with 'K'. If it doesn't, just stick a 'K' in front of it anyway.

• Dolphin: The file manager. Widely considered one of the most powerful file managers in existence. It makes Windows Explorer look like a toy.
• Konsole: The terminal emulator.
• KRunner: A launcher that appears when you type on the desktop. It can calculate math, convert currency, find files, and execute shell commands.
• KWrite / Kate: Text editors.
• KCalc: It's a calculator. With a K.

KDE Connect

This deserves its own mention. It is a piece of software that wirelessly bridges your Android phone and your Linux desktop. You can see phone notifications on your PC, reply to texts, share clipboards, and even use your phone screen as a trackpad for the computer. It is pure magic.

History & Technology

The Qt Framework

KDE is built using the Qt toolkit (C++). This is why KDE apps tend to look and feel a bit different than GNOME apps (which use GTK). For a long time, this caused a visual "civil war" in Linux where apps wouldn't look right if you ran a KDE app on GNOME or vice versa. Nowadays, they play nice together.

The Steam Deck Era

For years, KDE was seen as the "geeky" option for power users. That changed massively when Valve released the Steam Deck. The "Desktop Mode" on the Steam Deck is just stock KDE Plasma. Suddenly, millions of gamers were using KDE without even realizing it.

Fun Facts

• Mascot: A green dragon named Konqi, also shaped like an alphabet 'K'.
• KDE 4 Disaster: In 2008, they released KDE 4.0. It was a buggy, incomplete mess that alienated half their user base. It took them years to recover their reputation. It is a history lesson in "don't rewrite your entire codebase from scratch unless you really have to."
• Pronunciation: It is usually pronounced "Kay-Dee-Ee," though some ancient legends suggest it was once meant to be "Kool Desktop Environment." (Thankfully, they dropped the "Kool").