UPDATE – September 27: We did it! 23 new sustainers joined NumFOCUS to support open source scientific computing software. You can participate, too: Join now.

If I could summarize the spirit of NumFOCUS in two words, they would be:




As the Communications Director for NumFOCUS, I’m privileged to experience how amazing our community is on a daily basis. Thousands of people all over the world contribute in so many ways to support NumFOCUS open source projects. Our community is filled with folks organizing sprints, building community around amazing local PyData chapters, crafting tools to make the community more inclusive, and so much more.

I’m therefore excited to announce:

Today we’re launching a new fundraising campaign focused on those two words — sustainability and community — called Sustainer Weeks.

In a few short weeks, September 22-25, we’ll be passing the torch from the outgoing Board to the newly selected Board of Directors at the NumFOCUS Summit, a gathering of NumFOCUS open source project leaders and community stakeholders to collectively tackle the challenges of long-term sustainability for open source scientific software. (You can participate!)

Sustainer Weeks will last from today, September 4th, through the last day of the Summit, September 25th.

During this time, we are asking the community to step forward to show your support for the long-term sustainability of our open source projects by committing to a recurring donation, thereby becoming a NumFOCUS Sustaining Member.

“I want to give back to the community that has enabled my career.”

~Justin Reid, NumFOCUS Sustaining Member

As of today, NumFOCUS has 149 Sustaining Members.

We hope to add at least one new Sustaining Member per day of the Sustainer Weeks, which means we have a goal of 22 new sustainers by September 25th.


Help us reach our goal of 22 new Sustaining Members by Sept. 25!


Whether you donate $1 once a month or $1,000 once a year, any amount makes a difference! Our Sustaining Members represent the growing support of the community, and the funds you contribute are turned into direct support for the projects.

Please help us spread the word by sharing this post to your networks and social media!

Thank you for helping us to make the inaugural NumFOCUS Sustainer Weeks a success.