The Free Software Foundation (FSF) and the GNU Project were both started by Richard M. Stallman (RMS), and he served until recently as the head of both. Because of that, the relationship between the FSF and GNU has been fluid.

As part of our commitment to supporting the development and distribution of fully free operating systems, the FSF provides GNU with services like fiscal sponsorship, technical infrastructure, promotion, copyright assignment, and volunteer management.

GNU decision-making has largely been in the hands of GNU leadership. Since RMS resigned as president of the FSF, but not as head of GNU ("Chief GNUisance"), the FSF is now working with GNU leadership on a shared understanding of the relationship for the future. As part of that, we invite comments from free software community members at fsf-and-gnu@fsf.org.

Update 2019-10-10: Messages sent to fsf-and-gnu@fsf.org and gnu-and-fsf@gnu.org will be privately shared between the FSF and GNU leadership as part of this process.

Update 2019-10-07: GNU leadership has also published a statement. The contact address for sending comments to GNU is gnu-and-fsf@gnu.org.