Jeff Mancuso, dev of expanDrive :

With high-level languages and good libraries, small teams can create great products at a rapid pace. We realized that we could write applications for the desktop in the exact same way. We rewrote SftpDrive from top to bottom in Python, with a GUI in Objective-C. It’s called ExpanDrive, and it took 1/3rd the time that SftpDrive took to develop.

read the nice post here

That’s what happened to us on Canola and other projects development, and no Canola2 was not a rewrite, it was a brand new application from scratch, using totally different technologies and we also achieved the same performance, including : more features more polished and also : more maintainable and the best one : easier to get a new dev on board (start time quite small for simple / medium tasks)

Of course this is not a silver bullet, a magical way and you should only consider giving it a chance if you haven’t : ) of course there will always be “no go”s and other reasons not to do it, but for a lot of user space applications it’s just an amazing tool to work on.