There's TunSafe [1], a client for Windows. Its source code [2] has been published as well.

[1]: https://tunsafe.com/

[2]: https://github.com/TunSafe/TunSafe

By the same programmer as uTorrent.

What is the current status with getting the required bits merged into the Linux kernel? I don't really follow lkml (my email service would instantly hit its quota), and the todo list (https://www.wireguard.com/todo/) surprisingly doesn't include any word about this.

Posted v8 a few weeks ago. I'm working on v9 now. I'm mostly working on readying the new crypto api, Zinc -- https://lwn.net/SubscriberLink/770750/95c3c169634d1447/ -- and I'll be hopefully discussing it with some folks at the conference in Vancouver next week.

Any chance the session will be recorded? I noticed that Linux Plumbers no longer seems to publish on Youtube in recent years (since 2013) and the tickets to the conference are sold out. :<

Also a big thank you. There's nothing wrong with charging for an app or VPN service, charity is unfortunately not a sustainable business model and the app can still remain FLOSS but that's just my two cents.

I’d certainly not mind helping fund development in some form, if there is some discomfort with charging for the app I’d be happy to see an IAP tip jar.

You can donate directly here [1]. Apple takes a 30% tax on app purchases, so (as usual) it's better to donate directly.

[1]: https://www.wireguard.com/donations/

Thanks for the update, and good luck!

Is Windows cool loading GPL kernel modules, or is that a userspace implementation?

I have no idea how it's implemented, but I'll comment on the GPL thing assuming it's a module, and assuming that modules are derivative works (not clear if true).

There shouldn't be a problem from Microsoft's side since they're not the ones distributing it. You are free to assemble a module that has incompatible licenses terms and use it personally because the GPL only really activates on distribution (like if you sell your laptop with this module installed).

So even in the worst case, Microsoft shouldn't care. Does Windows even have the concept of MODULE_LICENSE like Linux?

Excellent. Has work on the userspace UWP version started? I'd be happy to help, but I don't want to duplicate any work in progress.

What are the steps still to be taken for Windows? Any particular aspect that could benefit from contributions?

Any news which API you will use to communicate with the Windows IP stack? I heard someone mention UWP but I don't think it's supported in Windows 7?