The ICCCM (Inter-Client Communication Conventions Manual) or the I39L, is a standard that defines how X Window System clients should interact with one another. It was designed in 1998 by David Rosenthal of the MIT X Consortium and is located online at the ICCCM page.

Window managers compliant with ICCCM

  • Aewm
  • Alloywm
  • Awesome
  • Blackbox
  • Compiz
  • Dwm
  • Enlightenment
  • Evilwm
  • Fvwm
  • IceWM
  • Kwin
  • Metacity
  • Musca
  • Openbox
  • Vtwm
  • Wmfs
  • Xfwm
  • Xmonad

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