While we await opensource software - its comming folks - it appears there are several limited use packs all of them Windoze friendly - but and here is the catch they will demand a payment after a set time.Since these programs are being rewritten all over the place often by kids - surprise - enabling us to easily create SW for GUIs like Windoze; it is not so much whether but when such software will be 100% free.
In a way it is inevitable, the internet is now about what we do with it rather than how we do it!