Aseprite is a pixel art software developed by David Capello and published by Igara Studio. It was initially released as a standalone app on June 6, 2014, then released on Steam for Microsoft Windows, macOS, and Linux/SteamOS on February 22, 2016. It was made using C++.
Description[]
This is a pixel-art tool to create 2D animations, sprites, and any kind of graphics for games.