Aseprite

Aseprite: An intuitive animated sprite editing application for image editing and pixel art creation

Aseprite is a powerful sprite editing tool that lets you mix multiple images and effects with ease, to create short animations and edit photos.

With Aseprite you can create beautiful pixel art, and you can load various types of images into the app like JPG, GIF, ASE, BMP, PCX, ASE and others. Supported export formats are just as numerous, plus you get the ability to save animation strips as well.

There are several tools you can use to design pixel graphics such as brushes, shapes, spray areas and others, all of which can be customized using the built-in color palettes.

Aseprite also bundles a large collection of effects you can apply on your images like various types of blur and a color curve graph, each with its own options. Layer support is available as well, so you can effortlessly manage objects and work with transparency.