In my case, the multiple window app is Eclipse. I have a dual monitor setup with each screen having its own set of workspaces. Eclipse being what it is, I want to be able to pull some of its tabs out into their own windows on the 'secondary' monitor. I can do that but when I quit eclipse and start it back up, everything opens on 1 monitor with the main eclipse window opening behind the others that are floating ( I assume they get marked as transient or something like that... ) Are there any blog posts, modules, example configs out there that I can take a look at to figure out how to get this setup working on application launch? Any other advice is appreciated as well. In case it helps, here is my current xmonad.hs: https://github.com/SeanTAllen/dotxmonad/blob/master/xmonad.hs