i3-gaps

i3-gaps is a fork of i3wm, a tiling window manager for X11. It is kept up to date with upstream, adding a few additional features such as gaps between windows. In order to use gaps you need to disable window titlebars. This can be done by adding only one command line to your config. Gaps are the namesake feature of i3-gaps and add spacing between windows/containers. Gaps come in two flavors, inner and outer gaps wherein inner gaps are those between two adjacent containers (or a container and an edge) and outer gaps are an additional spacing along the screen edges. Gaps can be configured in your config either globally or per workspace, and can additionally be changed during runtime using commands (e.g., through i3-msg). Outer gaps are added to the inner gaps, i.e., the gaps between a screen edge and a container will be the sum of outer and inner gaps.