Here are two utilities from the Autoit forum. HideCaption and AltMove.
Hidecaption remvoes titlebars and borders,AltMove helps in positioning and resizing border less
Synfig screen shot.
Win+q removes caption on active windows
To move a window with a hidden caption bar, activate the system menu (Alt+space) or use the utility AltMove
Scroll down the autoit forum page there is even code examples how they did it.