Icons8 - Free app for Mac & Windows already containing 39,800 icons. Allows to search and import icons…
useAnimations - An animated icon library for your projects
Iconscout - Design Resource Marketplace.
+500 Animated Icons by Lordicon - Animated lottie icons for unforgettable user experience
Craftwork - A collection of User Interface resources made by Craftwork
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!