..from:
http://www.tuaw.com/2008/10/27/codeweavers-says-cheap-gas-free-software-tomorrow/

Three months ago, CodeWeavers CEO Jeremy White offered a challenge to another CEO -- the nation's chief executive, George W. Bush. If the president achieved one of White's six "Lame Duck" goals during the twilight of his 2nd term, White would make Windows-API enabler & WINE GUICrossOver free to customers for one day. Some considered White's proposal a great motivational tool for GWB; others found it smug, partisan and kind of a goofy way to promote the company's products, but in any event none of his six challenges seemed to be on the path to achievement, so that's where the story should have ended. CrossOver is a fine way to run Windows apps on your Mac, but as a force for political change, not so much.
Then a funny thing happened on the way to January 20th: due to global economic conditions and through no fault of the president, the price of crude oil dropped precipitously and the cost of gasoline moved in parallel... bringing the average price per gallon in Minneapolis down to the target $2.79 level called for in White's goal #1. 


http://www.codeweavers.com/



For today only (until midnight CST), you can download Crossover for Mac and or Linux for free
- -- it's usually ~US$40 or so.

About CodeWeavers

CodeWeavers' mission is to make Linux and Mac OS X fully Windows compatible operating systems. We do this through the power of Wine, which powers all of our CrossOver products. The CrossOver products make it possible to run Windows programs on Mac OS X and Linux without needing a copy or license for Windows itself.

About Wine

Wine is an open-source reimplementation of the Win32 API for Unix-based operating systems. Wine allows Windows applications to be run without a Windows operating system license. CodeWeavers is the largest corporate sponsor of the Wine Project, and contributes all of its work free to Wine.


Crossover is a commercial version of the WINE emulator, that allows the
user to run Windows apps on Mac or Linux.