i3 is a dynamic tiling window manager. Its key features are correct implementation of Xinerama (workspaces are assigned to virtual screens, and it does the right thing when attaching new monitors) and XrandR support (which is still unfinished). Both horizontal and vertical columns can be used in tiling. There is a special focus is on writing clean, readable, and well documented code. i3 uses xcb for asynchronous communication with X11, and has several measures to be very fast. i3 is primarily targeted at advanced users and developers.

Operating Systems

Recent releases

  •  27 Jan 2014 15:42

    Release Notes: This release features a number of documentation improvements, better error messages in various places, better tray compatibility in i3bar, and a number of bugfixes.

    •  07 Aug 2013 22:11

      Release Notes: Compatibility was improved, in particular for Mathematica and Java applications. i3-nagbar should work with more terminal emulators than before.

      •  08 Apr 2013 16:29

        Release Notes: This is a bugfix release, and all users are advised to upgrade. It fixes an issue which would cause i3 to crash when dragging floating windows from one display to another.

        •  12 Mar 2013 13:34

          Release Notes: Most of the changes are cleanups and bugfixes. Due to cleanups, i3 no longer depends on flex/bison. libev ? 4 is now a hard dependency (libev < 4 is not supported anymore). One important change to note is that moving windows to a different output will no longer move focus to that output.

          •  05 Mar 2013 15:41

            Release Notes: An important under-the-hood change is that this release now uses the same parser infrastructure for the configuration file as for the commands. Apart from that, there have been several little fixes and additions which make i3 pay more attention to detail, particularly in the floating window area of the code. See the changes/bugfixes list for more information. Do note that these changes are 4.4-specific, and since the last version released here there have been many changes.

            Recent comments

            30 Jul 2011 16:07 thomp

            i3 is very usable and readily configurable


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