iOS and OS X

Cocoa, Cocoa Touch, Objective-C, Swift, iPhone, iPad, Mac, .NET to Cocoa

Web

ASP.NET MVC, JavaScript, Angular.js, WebGL, Azure Cloud, Blob Storage, ASP.NET HTTP Services

Windows

.NET, C#, F#, Win32, Cocoa to .NET, PowerShell

Cross Platform

C, C++, Scala, Clojure, Erlang, Node.js, Python, OpenGL, OpenGL ES, GLSL, Blender, Automation, Git