Linux上でWindowsアプリケーションを実行できるソフトウェアらしいです。

サポートしているアプリケーションは以下（公式より引用）

Supported Applications

CrossOver Linux is capable of running a range of Windows software, but CodeWeavers will support the following applications:

• Microsoft Office 2007, 2003, XP, 2000 and 97
  • Microsoft Word
  • Microsoft Excel
  • Microsoft PowerPoint
  • Microsoft Outlook
  • Microsoft Access ^*1
• Microsoft Internet Explorer 6
• Microsoft Project
• Adobe Photoshop
• Microsoft Visio
• Lotus Notes 5.0 and 6.5.1
• Quicken
• FrameMaker
• Various Web Browser Plugins
  • QuickTime
  • Shockwave Director
  • Windows Media Player 6.4
• and more…

*1 – Microsoft Access supported in Office 2000 only.

Supported Languages

CrossOver Linux contains support for English, French, German, Polish, Portuguese, Spanish, Russian, and Japanese.

CrossOverLinux
http://www.codeweavers.com/products/cxlinux/