Slightly old news, but worth repeating:
Substrata is now (almost entirely) open source!
You can find it on GitHub here: github.com/glaretechnologies/substrata, and Glare-core, which has a bunch of code including the 3d engine here: github.com/glaretechnologies/glare-core
The only thing that is not open-source is some of the Auction management and payment code. (Write your own! or ask me if you are interested)
Everything you need to build and run your own Substrata native client, Substrata webclient, and Substrata server is open source.
Contributions are very welcome! Come by the discord channel to discuss or to get involved, or if you have any questions.
