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.
Vuforia SDK - Vuforia is a vision-based augmented reality software platform.
Google ARCore - Google Augmented Reality SDK
ARToolKit - The world's most widely used tracking library for augmented reality.
ZapWorks - ZapWorks is the complete augmented reality toolkit for agencies and businesses who want to push the boundaries of creativity and storytelling.
Vuforia - Leading Augmented Rreality platform.