Tiling window manager
In computing, a tiling window manager is a window manager with an organization of the screen into mutually non-overlapping frames, as opposed to the more popular approach of coordinate-based stacking of overlapping objects (windows) that tries to fully emulate the desktop metaphor.
The first Xerox Star system (released in 1981) tiled application windows, but allowed dialogs and property windows to overlap. Later, Xerox PARC also developed CEDAR (released in 1982), the first windowing system using a tiled window manager.
Next in 1983 came Andrew WM, a complete tiled windowing system later replaced by X11. Microsoft's Windows 1.0 (released in 1985) also used tiling (see sections below). In 1986 came Digital Research's GEM 2.0, a windowing system for the CP/M which used tiling by default. One of the early (created in 1988) tiling WMs was Siemens' RTL, up to today a textbook example because of its algorithms of automated window scaling, placement and arrangement, and (de)iconification. RTL ran on X11R2 and R3, mainly on the "native" Siemens systems, e.g., SINIX. Its features are described by its promotional video. The Andrew Project (AP or tAP) was a desktop client system (like early GNOME) for X with a tiling and overlapping window manager.
MacOS X 10.11 El Capitan released on September 2015 introduces new window management features such as creating a full-screen split view limited to two app windows side-by-side in full screen by holding down the full-screen button in the upper-left corner of a window.
Tiling window managers
To tile windows, the user selects them in the taskbar and uses the context menu choice Tile Vertically or Tile Horizontally. Choosing Tile Vertically will cause the windows to tile horizontally but take on a vertical shape, while choosing Tile Horizontally will cause the windows to tile vertically but take on a horizontal shape. These options were later changed in Windows Vista to Show Windows Side by Side and Show Windows Stacked, respectively. Windows 7 adds the ability to drag windows to either side of the screen to create a simple side-by-side tiled layout, or to the top of the screen to maximize.
The Windows 8 GUI introduced a new basic tiling window manager. In Windows 10, users are able to tile Windows by quarters. Its Snap Assist feature has a setting to simultaneously resize an adjacent full-height window when a snapped window is resized.
The first version (Windows 1.0) featured a tiling window manager, partly because of litigation by Apple claiming ownership of the overlapping window desktop metaphor. But due to complaints, the next version (Windows 2.0) followed the desktop metaphor. All later versions of the operating system stuck to this approach as the default behaviour.
List of tiling window managers for Windows
- AquaSnap - made by Nurgo Software. Freeware, with an optional "Professional" license.
- bug.n – open source, configurable tiling window manager built as an AutoHotKey script and licensed under the GNU GPL.
- MaxTo — customizable grid, global hotkeys. Works with elevated applications, 32-bit and 64-bit applications, and multiple monitors.
- WS Grid+ – move and/or resize window's using a grid selection system combining benefits of floating, stacking and tiling. It provides keyboard/mouse shortcuts to instantly move and resize a window.
- Stack – customizable grid (XAML), global hotkeys and/or middle mouse button. Supports HiDPI and multiple monitors.
- Plumb — lightweight tiling manager with support for multiple versions of Windows. Supports HiDPI monitors, keyboard hotkeys and customization of hotkeys (XAML).
- workspacer — an MIT licensed tiling window manager for Windows 10 that aims to be fast and compatible. Written and configurable using C#.
- dwm-win32 — port of dwm's general functionality to win32. Is MIT licensed and is configured by editing a config header in the same style as dwm.
X Window System
In the X Window System, the window manager is a separate program. X itself enforces no specific window management approach and remains usable even without any window manager. Current X protocol version X11 explicitly mentions the possibility of tiling window managers. The Siemens RTL Tiled Window Manager (released in 1988) was the first to implement automatic placement/sizing strategies. Another tiling window manager from this period was the Cambridge Window Manager developed by IBM's Academic Information System group.
List of tiling window managers for X
- awesome — a dwm derivative with window tiling, floating and tagging, written in C and configurable and extensible in Lua. It was the first WM to be ported from Xlib to XCB, and supports D-Bus, pango, XRandR, Xinerama.
- bspwm — a small tiling window manager that, similarly to yabai, represents windows as the leaves of a full binary tree. It does not handle key-binds on its own, requiring another program (e.g. sxhkd) to translate input to X events.
- Compiz — a compositing window manager available for usage without leaving familiar interfaces such as the ones from GNOME, KDE or Mate. One of its plugins (called Grid) allows the user to configure several keybindings to move windows to any corner, with five different lengths. There are also options to configure default placement for specific windows. The plugins can be configured through the Compiz Config Settings Manager / CCSM.
- dwm — allows for switching tiling layouts by clicking a textual ascii art 'icon' in the status bar. The default is a main area + stacking area arrangement, represented by a = character glyph. Other standard layouts are a single-window "monocle" mode represented by an M and a non-tiling floating layout that permits windows to be moved and resized, represented by a fish-like ><>. Third party patches exist to add a golden section-based Fibonacci layout, horizontal and vertical row-based tiling or a grid layout. The keyboard-driven menu utility "dmenu", developed for use with dwm, is used with other tiling WMs such as xmonad, and sometimes also with other "light-weight" software like Openbox and uzbl.
- herbstluftwm — a manual tiling window manager (similar to i3 or Sway) that uses the concept of monitor independent tags as workspaces. Exactly one tag can be viewed on a monitor, with each tag containing its own layout. Like i3 and Sway, herbstluftwm is configured at runtime via IPC calls from herbstclient.
- i3 — a built-from-scratch window manager, based on wmii. It has vi-like keybindings, and treats extra monitors as extra workspaces, meaning that windows can be moved between monitors easily. Allows vertical and horizontal splits, tabbed and stacked layouts, and parent containers. It can be controlled entirely from the keyboard, but a mouse can also be used.
- Ion — combines tiling with a tabbing interface: the display is manually split in non-overlapping regions (frames). Each frame can contain one or more windows. Only one of these windows is visible and fills the entire frame.
- Larswm — implements a form of dynamic tiling: the display is vertically split in two regions (tracks). The left track is filled with a single window. The right track contains all other windows stacked on top of each other.
- LeftWM — a tiling window manager based on theming and supporting large monitors such as ultrawides.
- Qtile — a tiling window manager written, configurable and extensible in Python.
- Ratpoison — A keyboard-driven GNU Screen for X.
- spectrwm — a small dynamic tiling and reparenting window manager for X11. It tries to stay out of the way so that valuable screen real estate can be used for much more important stuff. It has sane defaults and does not require one to learn a language to do any configuration. It is written by hackers for hackers and it strives to be small, compact and fast. Formerly called "scrotwm".
- StumpWM — a keyboard driven offshoot of ratpoison supporting multiple displays (e.g. xrandr) that can be customized on the fly in Common Lisp. It uses Emacs-compatible keybindings by default.
- wmii (window manager improved 2) supports tiling and stacking window management with extended keyboard, mouse, and filesystem based remote control, replacing the workspace paradigm with a new tagging approach. The default configuration uses keystrokes derived from those of the vi text editor. The window manager offers extensive configuration through a virtual filesystem using the 9P filesystem protocol similar to that offered by Plan 9 from Bell Labs. Every window, tag, and column is represented in the virtual filesystem, and windows are controlled by manipulating their file objects (in fact, the configuration file is just a script interfacing the virtual files). This RPC system allows many different configuration styles, including those provided in the base distribution in plan9port and bourne shell. The latest release 3.9 also includes configurations in Python and Ruby. The latest release supported Xinerama, shipping with its own keyboard-based menu program called wimenu, featuring history and programmable completion.
- xmonad — an extensible WM written in Haskell, which was both influenced by and has since influenced dwm.
List of tiling window managers for Wayland
- Sway — Sway is "a drop-in replacement for the i3 window manager, but for Wayland instead of X11. It works with your existing i3 configuration and supports most of i3's features, and a few extras".
- Way Cooler — Way Cooler is an unmaintained Wayland compositor for the Awesome window manager. It is written in C and, like Awesome, configurable using Lua, and extendable with D-Bus.
- The Oberon operating and programming system, from ETH Zurich includes a tiling window manager.
- The Acme programmer's editor / windowing system / shell program in Plan 9 is a tiling window manager.
- The Samsung Galaxy S3, S4, Note II and Note 3 smartphones have a multi-window feature that allows the user to tile two apps on the device's screen.
- The Pop Shell extension, from Pop!_OS can add tiling windows manager functionalities to GNOME.
- The Amethyst window manager by ianyh, which provides window tiling for macOS and was inspired by xmonad.
Although tiling is not the default mode of window managers on any widely used platform, most applications already display multiple functions internally in a similar manner. Examples include email clients, IDEs, web browsers, and contextual help in Microsoft Office. The main windows of these applications are divided into "panes" for the various displays. The panes are usually separated by a draggable divider to allow resizing. Paned windows are a common way to implement a master–detail interface.
Developed since the 1970s, the Emacs text editor contains one of the earliest implementations of tiling. In addition, HTML frames can be seen as a markup language-based implementation of tiling. The tiling window manager extends this usefulness beyond multiple functions within an application, to multiple applications within a desktop. The tabbed document interface can be a useful adjunct to tiling, as it avoids having multiple window tiles on screen for the same function.
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