SVG Artista - Little tool that helps you create SVG animations
Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
SVG Backgrounds - Customize, scalable backgrounds and patterns for free
Pixel Studio - The Pixel Art Is Always Fun
SVGator - Online SVG Animation Creator - No Coding Skills Required
Piskel - Piskel is a website where designers online create sprites or pixel art.