A Microsoft engineer, Matthieu Bucchianeri, has developed the Oasis driver, which allows Windows Mixed Reality headsets to support SteamVR after the platform's discontinuation. The driver is available for free on Steam and requires an Nvidia GPU. It operates independently of the Mixed Reality Portal, enabling users to run OpenVR and OpenXR applications through SteamVR with comprehensive tracking for headsets and motion controllers. Bucchianeri reverse-engineered Nvidia and SteamVR code to create the driver, which is not open source but is free for users to download. Quick start documentation is provided for setup assistance.