PixaTool - Convert any image or video into pixel art 👾
Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
Pixelator - Convert any picture into pixel-art sprites!
Game Jolt - Game Jolt, where all the best free Indie Games are at!
SLK_img2pixel - Convert images/textures to pixel art
itch.io - An online game marketplace and community.