https://github.com/sabof/es-windows.git
git clone 'git://github.com/sabof/es-windows.git'
This package provides user-access to internal Emacs windows, and an API for querying using it's interface. It's an extension Dimitri Fontaine's switch-window.
The follwing commands are available. esw/select-window is the core function, and the others are wrappers around it.
Each number represents a window. Windows followed by H or V, are internal Horizontal or Vertical splitters. The last window is an external window, showing a buffer.
First you need to select a window on which to operate, by entering it's number. RET will select it. ^, >, v, and < will split it.
It's also possible to enter an operation without specifying a window, in which case the root window will be used.