Massive Addons for Visual Composer is the most complete extensions package. Over 1700 presets, more then 70 shortcodes & additions, easy to use.
Demo: https://codecanyon.net/item/massive-addons-for-visual-composer/14429839
source http://www.codelist.cc/plugins/241328-massive-addons-for-wpbakery-page-builder-v2461.html