Cygwin 0 votes

Get that Linux feeling - on Windows!

Cygwin is:

1.a collection of tools which provide a Linux look and feel environment for Windows.

2.a DLL (cygwin1.dll) which acts as a Linux API layer providing substantial Linux API functionality. 

The Cygwin DLL currently works with all recent, commercially released x86 32 bit and 64 bit versions of Windows, with the exception of Windows CE and Windows NT4.

Wine 0 votes

Wine lets you run Windows software on other operating systems. With Wine, you can install and run these applications just like you would in Windows.

Wine is still under active development. Not every program works yet, however there are already several million people using Wine to run their software.

Wine will always be free software. Approximately half of Wine's source code is written by volunteers. The rest is sponsored by commercial interests, especially Codeweavers who sell a supported version of Wine.

Wine is heavily reliant on its user community. User tests fill our Application Database to track how well programs work, and all the answers in the forums come from volunteers.