It’s happening Ever since Swift was open sourced by Apple including a release for Linux, people speculated about why Apple would do this. The most popular theory was that Apple itself wanted to use Swift on the server. And these days, even for Apple — server equals Linux — hence the Linux release. As far as we know, much of Apple’s server infrastructure (at least the stores) is build on WebObjects — a technology that is showing its age (to put it mildly).