Now UI Kit - A beautiful Bootstrap 4 UI kit. Yours free.
MakeAppIcon - MakeAppIcon resizes and optimizes your icon designs into all formats needed for iOS and Android mobile app!
Dashboard UI Kit - A modern & responsive dashboard UI kit for designers.
EasyAppIcon - EasyAppIcon helps you to create your own app icons easily. Supporting Android Adaptive Icon!
Landing UI Kit - Handcrafted UI components for landing pages
App Icon Maker - Create icons for mobile app stores online for free.