Benjamin Encz with a tiny library for quickly generating new types with built in validations. I really love the idea of making types more descriptive based on the restrictions you put on what data makes them valid. Great idea.
More from IBM! I guess both of these mentions today are the fruits of the partnership announcement last year. Kitura is another web framework and HTTP server written in Swift, and like all the others it's still very early days. If you want to have a play with it there's instructions in the README, or there is a tutorial written by Cocoa Dev Central on getting it up and running on a Digital Ocean VM.
Maybe server side Swift frameworks are this year's Swift JSON frameworks?
Looking for an implementation of an algorithm in Swift? This repository has probably got you covered. Matthijs Hollemans has put together this collection of over 40 algorithms already, and more are being added all the time. Even if you don't directly need any of these right now, they're a great learning resource.