Core: @realitycollective/webxr-uiextensions
The engine-free core - window manager, dock state, region maths, drag maths, control models and the adapter contract.
Meta IWSDK: @realitycollective/iwsdk-uiextensions
The reference adapter binding the core onto Meta's Immersive Web SDK, with the full feature set.
Google XR Blocks and plain three.js: @realitycollective/xrblocks-uiextensions
The experimental adapter binding the core to any three.js WebXR scene, inside an XR Blocks Script or hand-rolled.
Developer tooling: @realitycollective/uix-devtools
The edit-session gate, runtime UIKitML compilation and the uix-dev CLI, never shipped in a player-facing bundle.