Google ARCore - Google Augmented Reality SDK
LetterNote - Fine Stationery, Art Prints, Accessories & Collectibles
Vuforia SDK - Vuforia is a vision-based augmented reality software platform.
PencilCase - Transform your designs into native iOS apps in a heartbeat.
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.
Nicely Noted - Subscription service for beautiful greeting cards and stamps