Fontea - 700 Google fonts in your Photoshop
Zwicon - A simple, carefully designed collection of icons
Nucleo - Commercial vector icons and accompanying apps to manage and customize them.
1000 Detailed Creative Icons - Carefully designed icons with tons of fine details
Vivid JS - A highly customizable, open source SVG icons library
Font Awesome - Font Awesome makes it easy to add vector icons and social logos to your website. And version 5 is redesigned and built from the ground up!