Feather Icons - Simply beautiful open source icons
IconStore - Free icon packs by first-class designers
Icons8 - Free app for Mac & Windows already containing 39,800 icons. Allows to search and import icons…
omg-img - Insert icons directly into your HTML just by coding
Mosaic - Mosaic provides brands with solutions to store and categorize their digital graphic and photography files for quick and easy retrieval.
Iconscout - Design Resource Marketplace.