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i3wm

Keyboard-driven tiling you build yourself; minimal, fast, exactly your config.

Tiling window manager Display server X11

i3 is the tiling window manager that made tiling mainstream. Windows never overlap and never need dragging: they split the screen in clean rectangles, you command everything from the keyboard, and the entire configuration lives in one readable text file. Learn a dozen keybindings and the mouse becomes optional; learn thirty and it becomes vestigial.

The genius of i3 is restraint. It does exactly what a tiling WM must (tiling, workspaces, floating exceptions, a status bar) with sane defaults, a config syntax a newcomer can read, and documentation that answers questions before you ask them. It runs on X11, sips resources, and behaves identically for decades at a time. For keyboard-driven work, i3 is the standard everything else is compared to.

Strengths

• The gold-standard tiling workflow: fast, predictable, learnable.
• One plain-text config file; version it and carry it forever.
• Superb documentation, the best in the WM world.
• Tiny resource footprint; the desktop disappears entirely.
• Rock-stable: your muscle memory is safe for years.

Watch-outs

• X11 only; the Wayland continuation is its sibling Sway.
• You assemble the environment: bar, launcher, applets are your choices.
• The first week rewires habits; commitment required.

Standout features

• The config file that taught a generation to tile.
• i3bar and i3status: an entire status ecosystem.
• Scratchpad windows: hide-and-summon terminals on demand.
• Works identically on a laptop and a 1% -sized VM.

Who it's for

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