What kind of software can you get for free with BizSpark? You'll have access to Visual Studio Ultimate, Windows, SQL Server, Office and way more. Basically almost every Microsoft product available for development and testing!
The best part is all licenses you obtain during your enrollment in BizSpark are perpetual upon graduation, in other words you get to keep what you've used.
Accessing your free software is easy, just head over to the MSDN Subscriber Downloads page.
Then select or search for the product you want and select Product Keys to obtain a product key and Download to download the ISO or EXE.