Wine 1.5.2

Windows programs running in Wine act as native programs would, with a similar look and feel to other applications on your desktop, running without the performance or memory usage penalties of an emulator.

Benefits:

• Wine makes it possible to take advantage of all the Unix strong points (stability, flexibility, remote administration) while still using the Windows applications you depend on.
• Unix has always made it possible to write powerful scripts. Wine makes it possible to call Windows applications from scripts that can also leverage the Unix environment to its full extent.
• Wine makes it possible to access Windows applications remotely, even if they are a few thousand miles away.
• Wine makes it economical to use thin clients: simply install Wine on a Linux server, and voila, you can access these Windows applications from any X terminal.
• Wine can also be used to make existing Windows applications available on the Web by using VNC and its Java client.
• Wine is Open Source Software, so you can extend it to suit your needs or have one of many companies do it for you. 

Major Features:

1. Binary Compatibility
   • Loads Windows 9x/NT/2000/XP, Windows 3.x and DOS programs and libraries
   • Win32 compatible memory layout, exception handling, threads and processes
   • Designed for POSIX compatible operatings systems (eg. Linux and FreeBSD)
   • "bug-for-bug" compatibility with Windows
2. Graphics
   • X11-based graphics allows remote display to any X terminal
   • X11, TrueType (.ttf/.ttc) and Windows Bitmap (.fon) Fonts
   • DirectX support for games (limited Direct3D support)
   • Support for OpenGL based games and applications
   • Printing via PostScript driver or legacy native Win16 printer drivers
   • Enhanced Metafile (EMF) and Windows Metafile (WMF) driver
   • Desktop-in-a-box or mixable windows
   • Windows MultiMedia (WinMM) layer support with builtin codecs
3. Allows Windows program to interface with:
   • Sound devices via ALSA, OSS, JACK, Core Audio, libaudio, etc.
   • Multi-lingual keyboards and CJK input method support via XIM
   • Modems, serial devices
   • Networks (TCP/IP and IPX)
   • ASPI Scanners
   • Windows Tablets via XInput (eg. Wacom)
   • Designed for source and binary compatibility with Win32 code
   • Win32 API test suite to ensure compatibility
   • Compilable on a wide range of C compilers
   • Permits mixing of Win32 and POSIX code
   • Permits mixing of ELF (.so) and PE (.dll/.exe) binaries in one address space
   • Win32 compatible header files
   • Automatically generated API documentation
   • Resource compiler
   • Message compiler
   • IDL compiler
   • Extensive Unicode support
   • Internationalization -- Wine supports 16 languages
   • Built-in debugger and configurable trace messages
   • External memory checker support using Valgrind
   • Sample programs 
4. API Coverage and Portability
5. Others