The Wave VR SDK offers an open interface enabling interoperability between numerous all- in-one VR headsets and accessories, supporting mainstream game engines. This allows players with different VR devices an easy access to your extraordinary content.
OpenVR is an API and runtime that allows access to VR hardware from multiple vendors without requiring that applications have specific knowledge of the hardware they are targeting. This repository is an SDK that contains the API and samples. The runtime is under SteamVR in Tools on Steam.