use-package library,
you can add
(add-to-list 'package-archives
'("gelpa" . "http://gelpa.gdritter.com/") t)
to your .emacs file.
gelpa include:
adnot-mode — minimal major mode for editing
Adnot
human-readable data files.
electric-boogaloo-mode — minimal major mode for editing
electric boogaloo source files.gidl-mode — minimal major mode for editing
gidl interface files.ndbl-mode — minimal major mode for editing
ndbl configuration files.pico-ml-mode — minimal major mode for editing
PicoML source files.suppl-mode — minimal major mode for editing
SUPPL source files.telml-mode — minimal major mode for editing
TeLML markup files.