An independent implementation of Wireguard is a good thing, but zx2c4 apparently doesn't want that. I can't explain the zealous fight against it otherwise.
TunSafe's author Ludde also made µtorrent which he so often says. But depending on the version you have it's either good or infested with adware. Although the later one is not his fault anymore, I still wouldn't mention it without the version number that was still good.