Category 3: Collaborative spaces
The examples we have looked at so far are all apps that have been developed in advanced 3D engines and built with rich experiences in mind. They have been mostly gaming focused however there are also ways to deliver metaverse experiences through the humble web browser.
Mozilla Hubs
Mozilla Hubs is an open source web-based platform which allows you to create multi-user rooms, with portals linking one experience to another. It's free, relatively easy to set up and use, and can be thought of as a social VR tool.
It has its own easy-to-use designer and integrates with other tools to let you import previously developed 3d assets you may already have. The rooms you create can simply be shared via a URL - no downloads, no installations. You can let Mozilla host the room for you, which is the default, or deploy it to a private server.
You can’t create games, interactivity is relatively limited in that regard - but you can import 3d assets, images, videos and sound - and users can communicate and collaborate. It definitely fits the description of a metaverse.
Of course WebVR, which powers Hubs, has been around for a number of years. There are many frameworks to kickstart projects, including multi-user experiences - but building from scratch takes time so something like Hubs is great for kickstarting and experimenting.