Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
Pixel Art to CSS - Draw and animate pixel art, export the results to CSS
VistaCreate - The VistaCreate is a free and global digital platform which is known for sharing, searching, finding, and creating great art.
Pixel Art Studio - A purpose-built drawing tool for pixel artists
Pixilart - A drawing app for delightfully retro pixel art