Here is some WordPress plugins built for working with Icons.
Visual Composer Mega Pack – Addons and Templates
10,000+ Vector Icons – WordPress
Any Icon – WordPress
4k Icon Fonts for Visual Composer
4k icons is a Visual Composer shortcode add-on that gives you the awesome Icons.
SEO Icons – Animated SVG’s for WordPress
These animated SVG SEO/SEM icons will bring life to even the most basic pages.
Animated SVG Browser Icons – WordPress Plugin