Google ARCore - Google Augmented Reality SDK
QuickMark - QuickMark makes everything possible.
8th Wall - Cross-Platform Mobile AR
ZXing - Barcode Scanner for Android
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.
ConnectUpz - Helping service businesses to connect and grow your customer base by becoming part of of a larger ecosystem.