CamFind - CamFind is the very first mobile application that can photograph, identify, and provide information...
Google ARCore - Google Augmented Reality SDK
IQDB - Multi-service image search
8th Wall - Cross-Platform Mobile AR
TinEye - Reverse Image Search to help find an image's source, duplicates or altered versions.
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.