Motion Project - Motion is a highly configurable program that monitors video signals from many types of cameras.
IconStore - Free icon packs by first-class designers
Feather Icons - Simply beautiful open source icons
MakeAppIcon - MakeAppIcon resizes and optimizes your icon designs into all formats needed for iOS and Android mobile app!
Iconscout - Design Resource Marketplace.
Iconoir - A diverse and open-source library with 900+ icons