Columcille allows a Vim user to manage split windows using simple :Columns and :Rows commands.

Either

• download the files as a ZIP; extract that and place the files in each directory under their matching counterparts under ~/.vim (so for example, files under doc/ here would go under ~/.vim/doc/), or
• install using Vundle: add Bundle 'fifthposition/columcille' to the bundle list in your ~/.vimrc, start Vim, and run :BundleInstall (highly recommended).

Detailed… details are in the help file (columcille.txt).

Basic use:

1. :Columns <number>: divide the main window into <number> top-level vertical split windows (an example: :Columns 3)
2. :Rows <number>: divide the current top-level vertical split window (or the main window, if there are not vertical split windows open) into <number> horizontal split windows (an example: :Rows 4)

Enjoy! (No, that is not a suggestion. Enjoy, I say!)