Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
Favicon.io - The only favicon generator you need for your next project. Quickly and easily generate your favicon.ico file from text, image, or choose from hundreds of emojis. No design or technical skills required.
Grafx2 - GrafX2 is a bitmap paint program inspired by the Amiga programs Deluxe Paint and Brilliance.
favico.js - Use badges, images or videos with your website's favicon
LibreSprite - Free and open source program to create animated sprites.
Icon Horse - Bulletproof logo icons for any website