IconStore - Free icon packs by first-class designers
Artboard Studio - Online graphic design app mainly focused on product mockups.
Streamline icons - The world’s largest icon pack library - 100k icons and illustrations.
Vectr - Free vector graphics editor. A simple yet powerful web and desktop cross-platform tool for everyone.
Animated Icons from Icons8 - Massive collection of full-motion animated icons to make your project shine
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.