Artboard Studio - Online graphic design app mainly focused on product mockups.
Isometric - Create beautiful, abstract works of art & optical illusions
GraphJS - Make any website social
MagicPattern - The best design toolbox with 10+ tools for anyone
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.
Isometric Game Art Pack - Extensive library of game art for indie devs