8th Wall - Cross-Platform Mobile AR
Oculus Quest - An all-in-one VR system
Google ARCore - Google Augmented Reality SDK
Microsoft Hololens - Augmented reality headset from Microsoft
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.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.