Aseprite: A Pixel Art And Animated Sprites Creator

Aseprite is an Open Source application that allows you to create animated sprites. A sprite is basically a 2D animated image that can be included into a larger project (i.e Video game).

Aseprite offers all the features you might expect from a pixel art editor such as:

• Graphic editing tools (e.g. Layers, selections, blur tool, zoom ...)
• Built-in frame editor (i.e. GIF creator)
• Automatic color indexer 
• Preview mode
• Wide range of supported formats (e.g. Jpeg, ico, gif, png, bmp ...)
• Pixelated theme (I'm not sure if this should be called a feature or not)

ScreenShots:

#Preferences Dialog

#Tool Options

#Play Animation Window

Example:

This is an animated GIF that was created using Aseprite:

Ubuntu users can easily install Aseprite from the PlayDeb repository by using the following commands:

echo "deb https://archive.getdeb.net/ubuntu $(lsb_release -sc)-getdeb games" | sudo tee -a /etc/apt/sources.list
wget -q -O- https://archive.getdeb.net/getdeb-archive.key | sudo apt-key add -
sudo apt-get update
sudo apt-get install aseprite

Image: Animated Nyan Cat from DeviantArt