Cygwin now licensed under GPLv3+

Corinna Vinschen
Tue Apr 19 17:16:00 GMT 2011

Hi Cygwin friends and users,

I'm happy to announce that, effective immediately, Red Hat has
relicensed Cygwin from "GNU Public License version 2" (GPLv2) to
"GNU Public License version 3 or later" (GPLv3+).

The Open Source Licensing Exception persists, as well as the
availability of the Cygwin Alternative License, as described on

This shouldn't affect a lot of you, but if you're concerned that this
change in the Cygwin license might affect you and your projects, see in the first place.  You can also ask
questions on the cygwin or cygwin-licensing mailing list, but be aware
that we can't give valid legal advice.  It's always better to ask
a lawyer who's specialized in licensing questions.

Have fun,


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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                cygwin AT cygwin DOT com
Red Hat, Inc.

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