3D Filamental Graph is a small, free plugin for Obsidian. Install it straight from Obsidian's own Community Plugins browser, point it at a vault you already have, and it draws your existing notes and wikilinks as a 3D graph, inside Obsidian.
It's a view, not a workspace. The plugin reads what's already in your vault and renders it. It doesn't create notes, edit properties, or let you build a structure the way Filamental does, and nothing you do in it writes back to your files.
A fair way to think about it: a different pair of eyes on notes you already have, not a second tool to learn.
If you keep notes in both apps and want them genuinely working together, rather than one glancing at the other, that's Working with Obsidian instead. That page covers the real interoperability: moving whole projects between the two, not just viewing one from inside the other.
Still stuck? Email [email protected].