Rinari Is Not A Ruby IDE. Well, ok it kind of is. Rinari is a set of Emacs Lisp modes that is aimed towards making Emacs into a top-notch Ruby and Rails development environment. Rinari can be installed through ELPA (see http://tromey.com/elpa/) To install from source, copy the directory containing this file into your Emacs Lisp directory, assumed here to be ~/.emacs.d. Add these lines of code to your .emacs file: ;; rinari (add-to-list 'load-path "~/.emacs.d/rinari") (require 'rinari) (global-rinari-mode) Whether installed through ELPA or from source you probably want to add the following lines to your .emacs file: ;; ido (require 'ido) (ido-mode t) Note: if you cloned this from a git repo, you will have to grab the submodules which can be done by running the following commands from the root of the rinari directory git submodule init git submodule update