InSili.com has announced iSwift 2.0 (http://iswift.org), an update of its automated Objective-C to Swift conversion tool, developed exclusively for Mac OS X.
It offers automatic as-you-type conversion of your Objective-C sources to Apple’s Swift language, along with a full-featured Objective-C editor. iSwift offers a tool to convert and translate your existing Objective-C files (Cocoa or iOS) to Swift on the fly.
iSwift requires Mac OS X 10.7 or higher. It costs US$13.99.