There were three major server side Swift projects, and Vapor is the surviving one from that era Dead projects are - Kitura https://github.com/Kitura/Kitura ht

There were three major server side Swift projects, and Vapor is the surviving one from that era Dead projects are - Kitura https://github.com/Kitura/Kitura https://github.com/Kitura/Kitura - Perfect https://github.com/PerfectlySoft/Perfect https://github.com/PerfectlySoft/Perfect Don't know of large organizations using it in production, the vibe I get is that it's useful for an iOS developer who wants to deploy a small server for their product without learning Python or Javascript. You could certainly use it at larger scale, but you have to justify giving up the big ecosystems of its competitors.