The only thing I know with half of those features that's discontinued is the old Darkroom app but that doesn't tackle some of the bigger compatibilities. Source: about 2 years ago

Not sure if this is applicable, but if you're using Word or Scrivener or something, you may want to switch to a plaintext editor like Dark Room or Typora--something that won't underline your spelling and grammar mistakes. It doesn't even have italics or bold to get in your way. Dark Room is a little old, but I found it here: https://codex.jjafuller.com/books/dark-room/page/overview. Source: over 2 years ago

I use DarkRoom. Full screen, no distractions, no "fancy" auto-formatting. Source: almost 3 years ago

You can use this to make it a 6DOF headset and try some games https://riftcat.com/vridge. Source: 12 months ago

I remember trying the demo version of VRidge ages ago, my phone back then wasn't really ready for it but still played a couple of levels of the original DooM without too much issues. Source: about 1 year ago

That's years after Riftcat/VRidge, iVRy and AMD ReLiveVR did it and finally Airlink only happened because VirtualDesktop was stealing the show, an as far as I know only existed because this engineer started it on their own, PC compatibility was very very low on Metas TODO list. Source: over 1 year ago

Link to VRidge: https://riftcat.com/vridge. Source: over 1 year ago

One way is with Vridge / Riftcat, which is the only program I know of which allows you to use the Flow with SteamVR. You have to install Riftcat on your PC, which can be downloaded on their website and then you have to install vridge on the Vive Flow. Https://riftcat.com/vridge Since it is not fully supported on the Vive Flow, you have to sideload it e.g., with Sidequest. You can find the apk-File in this... Source: over 1 year ago