Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
Google ARCore - Google Augmented Reality SDK
Pixel Studio - The Pixel Art Is Always Fun
Vuforia SDK - Vuforia is a vision-based augmented reality software platform.
Piskel - Piskel is a website where designers online create sprites or pixel art.
Wikitude SDK - Wikitude’s all-in-one AR SDK combines 3D tracking technology (SLAM), image recognition and tracking, as well as geo-location for apps.