High Fidelity is open-source software for shared virtual reality. They believe that both the hardware and the internet infrastructure are now available to give people around the world access to an interconnected Metaverse that will offer a broad range of capabilities for creativity, education, exploration, and play. By using all of their computers together in an openly shared network, they can simulate this space at a far larger scale than would be possible by any single company or centrally hosted system. It was founded in 2013 and is based in San Francisco, California.
Learn more about this company on Crunchbase.