Pixelorama is a free & open source pixel art sprite editor, with animation support. It is made entirely with the Godot Engine. Current features as of version v0.9:
- 16 different tools to help you draw, which you can map to both of your left and right mouse buttons.
 - Are you an animator? Pixelorama has its own animation timeline just for you! You can work at an individual cel level, where each cel refers to a unique layer and frame. Supports onion skinning, cel linking, motion drawing and frame grouping with tags.
 - Different tool options for each of the mouse buttons.
 - Custom brushes, including random brushes.
 - Create or import custom palettes.
 - Pattern filling! Use the bucket tool to fill out an area with a pattern of your choosing.
 - Import images and edit them inside Pixelorama. If you import multiple files, they will be added as individual animation frames. Importing spritesheets is also supported.
 - Export your gorgeous art as PNG or GIF files. Exporting your projects as spritesheets is also possible.
 - Pixel perfect mode for perfect lines, for the pencil, eraser & lighten/darken tools.
 - Autosave support, with data recovery in case of a software crash.
 - Horizontal & vertical mirrored drawing.
 - Tile mode for pattern creation.
 - Rulers and guides.
 - Rectangular & isometric grid types.
 - Scale, crop, rotate, flip, color invert, HSV-adjust, desaturate and generate outlines and gradients in your images.