FWIW, as an iOS-centric programmer who’s also implemented a bunch of scripts and several moderate API projects in Swift/Linux, I haven’t found the OSS Foundatio

FWIW, as an iOS-centric programmer who’s also implemented a bunch of scripts and several moderate API projects in Swift/Linux, I haven’t found the OSS Foundation to be particularly lacking. The only quirk I can remember having to work around is the fact that for some reason, all the networking code (i.e., URLSession) is pulled out into a separate module, FoundationNetworking. FWIW, looking through that list you linked to, it seems most things are complete apart from relative edge cases (NSGeometry), fairly Apple-specific (Bundle), or replaced by something newer (NSCoder). The big one that jumps out to me as being a larger issue is the URL authentication stuff… so I guess steer clear if you need to handle basic auth/Kerberos/etc. The XML parsing being mostly incomplete is a bummer, too. :( Ultimately, though, I’ve found Swift on Linux to have everything I need for what I’ve been building with it. Obviously, YMMV, but (and not just for you, anyone else reading as well), I wouldn’t be scared off just because Foundation isn’t 100% complete. ### Edit: that being said, this is also just a defense/rebuttal to the comment I’m replying to. Swift isn’t the answer to all projects; I still reach for Clojure as my first choice for large API projects, mostly due to my own preferences.