Tiling window manager

In 1986 came Digital Research's GEM 2.0, a windowing system for the CP/M which used tiling by default.

[3] 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.

[4][5] The Andrew Project (AP or tAP) was a desktop client system (like early GNOME) for X with a tiling and overlapping window manager.

Windows 11 added more built-in tiling options, activated by hovering the mouse pointer over the maximize button.

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.

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.