Cygwin

Get that Linux feeling - on Windows

This is the home of the Cygwin project

What...


...is it?

Cygwin is:

  • a large collection of GNU and Open Source tools which provide functionality similar to a Linux distribution on Windows.

  • a DLL (cygwin1.dll) which provides substantial POSIX API functionality.

...isn't it?

Cygwin is not:

  • a way to run native Linux apps on Windows. You must rebuild your application from source if you want it to run on Windows.
  • a way to magically make native Windows apps aware of UNIX® functionality like signals, ptys, etc. Again, you need to build your apps from source if you want to take advantage of Cygwin functionality.

The Cygwin DLL currently works with all recent, commercially released x86 32 bit and 64 bit versions of Windows, starting with Windows XP SP3.

For more information see the FAQ.

Current Cygwin DLL version


The most recent version of the Cygwin DLL is 1.7.31. Install it by running setup-x86.exe (32-bit installation) or setup-x86_64.exe (64-bit installation).

Use the setup program to perform a fresh install or to update an existing installation.

Note that individual packages in the distribution are updated separately from the DLL so the Cygwin DLL version is not useful as a general Cygwin release number.

Commercial Support for Cygwin


For Cygwin licensing or commercial support, please visit the Red Hat Cygwin Product site.

Community Support for Cygwin


For all non-commercial Cygwin-related questions and observations, please check the resources available at this site, such as the FAQ, the User's Guide and the mailing list archives. If you've exhausted these resources then please send email to an appropriate mailing list . This includes observations about web pages, setup questions, questions about where to find things, questions about why things are done a certain way, questions about the color preferences of Cygwin developers, questions about the meaning of the number 42, etc.

Please send notification of technical problems (bad html, broken links) concerning these web pages to the Cygwin mailing list.

Please do not send personal email with "quick questions" to individual Cygwin contributors. The Cygwin mailing lists are the places for all questions. Really. I mean it.

NOT SEND EMAIL TO THIS ADDRESS: aaaspam@sourceware.org IT IS HERE ONLY TO COLLECT SPAM. IF YOU SEND EMAIL TO THIS ADDRESS YOU WILL BE AUTOMATICALLY BLOCKED.