VRChat - Create and play in virtual worlds with others
Oculus Quest - An all-in-one VR system
Spatial - Collaborate from anywhere in AR
Microsoft Hololens - Augmented reality headset from Microsoft
Gather Town - Spatial video-chat worlds for work and play
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.