Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
TextureLab - Free, Cross-Platform, GPU-Accelerated Procedural Texture Generator.
Grafx2 - GrafX2 is a bitmap paint program inspired by the Amiga programs Deluxe Paint and Brilliance.
NeoTextureEdit - NeoTextureEdit is an open source (GNU LGPL v.
Piskel - Piskel is a website where designers online create sprites or pixel art.
GraphicDesignerToolbox - Graphics editor for composing textures, buttons, logos, icons.