Are there any products such as Parallels Desktop or VMware Fusion 2.0 that are free or open source?

I'd like to run Windows from my Mac from (Intel based) Mac OS X but would prefer not to have to buy one of these products.

And if there are no other (or functional) solution, which of these products are superior and why?

Update: Not sure it matters, but I mainly want to run Windows Vista Ultimate.


4 Answers 4


Check out VirtualBox.

It even has seamless mode where you can run your program in a 'native' window on the desktop.

  • I had hard time to find what "per-window" virtualization is in Parallels or Fusion, which is not supported on VirtualBox. Would you post a link? Thanks.
    – Sunny
    Jun 17, 2009 at 19:22
  • Thats funny, because I use it on Linux command line so that I can run Windows GUI remotely! :) Jun 17, 2009 at 19:22
  • Sunny, by per-window I meant seamless. And you are right - you can run seamless with VirtualBox, I forgot about that. Will update my response. Jun 17, 2009 at 19:25
  • I replaced Parallels with VirtualBox and am much happier. The VMs are snappier, not to mention cross platform. We'll see how Oracle handles this incredible product in the future.
    – Scott Pack
    Jun 17, 2009 at 19:39
  • I use VB on Windows to virtualize Linux servers for testing / playing. Jun 17, 2009 at 19:49

You could try VirtualBox. It supports MacOS and has good reviews.


virtualbox works on OS X (intel). It also supports "seamless" windows, i.e. opening an windows app on your Mac desktop.


I would recommend VirtualBox, it has a nice Remote Desktop setting on beta version which can emulate Unity on Vmware Fusion.

  • Thanks but that answer was already give and furthermore it was accepted as the answer....
    – Frank V
    Jul 2, 2009 at 15:41

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