There’s a few competing VR standards at the moment. Obviously, mobile has a bunch of them; Google technically has two of their own. On the PC, the top two are Oculus and SteamVR. A third one, Open Source Virtual Reality (OSVR), was co-founded by Razer and Sensics.
Valve has now added their platform to Steam, including the tools that users will need to filter compatible content for that headset.
OSVR is an interesting initiative. For instance, when they released their second developer’s kit, HDK2, they also released an upgrade kit for the original. Currently priced at $220, it upgrades the screen to 2160×1200. They also have a Leap Motion upgrade, although that’s currently listed as “coming soon”. It has also been added to Unreal Engine 4 for the last few versions, so engine developers are considering it worthy of first-party support.