Downloading OpenOSX WinTel 3.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. This software for Mac OS X was originally created by OpenOSX. OpenOSX WinTel for Mac lies within System Tools, more precisely Virtualization. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
WinTel is an easy-to-use, stand-alone application that allows host operating systems (and applications) such as Microsoft Windows(R) and Ubuntu Linux to run in protected, virtual environments within windows on Mac OS X.
You may want to check out more software for Mac, such as roami, WidgetOrganizer or Transterpreter, which might be similar to OpenOSX WinTel.