FSF Celebrates 40 Years

The Free Software Foundation (FSF) turns forty on October 4, 2025 and we will end our thirties on a high note! Throughout 2025, we're celebrating the fortieth anniversary of the Free Software Foundation (FSF) with several initiatives from LibreLocal month in May to the in-person celebration in October to a free software hackathon in November. All these activities aim to bring the international free software community together, celebrate forty years of activism and all that we've achieved together, and discuss what we can do next to make the world freer. When we look back to 1985, we can see just how many stepping stones on the road to software freedom we've already laid together. We're eager to continue building the road ahead with you. Are you ready?

Below, see the timeline of events for all the exciting activities we planned for your. We look forward to celebrating with you!

Timeline of events

Countdown to our fortieth anniversary:

Ways to get involved

Come to the celebration on October 4, 2025. For information on how to get to the Wentworth Institute of Technology, where to stay, and where to eat, see the FSF40 travel information.

Invite your friends to celebrate with us and share the message that the FSF turns forty this year on your favorite free social media platform using the hashtag #FSF40.

Spread the FSF40 flyer in your area. You can download it here.

Become an associate member to support the FSF's work or sponsor a membership for someone else.

Stay tuned on all updates about the anniversary by signing up for the Free Software Supporter and follow us on Mastodon if you aren't already doing this.

Sponsor

Present your brand, company, or organization to the more than two million annual unique web visitors on fsf.org. Your support will help sustain, energize, and inspire the free software community and thereby raise your company's profile among developers, students, activists, legal and policy experts, free software and technology enthusiasts, and potential employees.

Sponsorship and underwriting opportunities can be found in the FSF40 sponsorship prospectus or in this informational flyer.

All materials must be submitted by September 15, 2025, to guarantee visual inclusion at the celebration. Please don't hesitate to contact Miriam Bastian at [email protected] with any questions you may have.

Media sponsor