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Upstream 2021

A one-day celebration of open source, the developers who use it, and the maintainers who make it.



A 100% virtual, completely free event bringing together like-minded application developers, open source project maintainers, and the extended network of people who care most about their work.

Meet and learn from the maintainers of popular open source libraries you use today
Explore today's most exciting and innovative open source projects across JavaScript, Python, Java, Ruby, and more
Gain exposure to new ideas from those using open source to develop applications at scale


About Upstream

Open source is an amazing testament to human ingenuity.

Well, that was fun! On June 7th, we hosted the first-ever Upstream conference, what we called a celebration of open source, the developers who use it, and the maintainers who make it. We think the day mirrored that description!

We celebrated open source with hundreds of developers—and the extended network of people who care about developers—in a myriad of ways. You can watch the whole day on-demand, but we wanted to share some of the highlights.

  • Tidelift CEO and co-founder Donald Fischer kicked off the day with a keynote shared with Dr. Rishi Manchanda, explaining the upstream parable and ways we can apply upstream thinking to open source.

  • Simon Phipps explained what the rights ratchet is—and if you develop code using open source, you need to listen to this talk.

  • Alex Williams of The New Stack moderated an important panel about the open source supply chain featuring industry experts like Shannon Lietz of Intuit, Arun Batchu of Gartner, Tom Callaway of AWS, and Donald Fischer of Tidelift. Check it out.

Thank you to all our wonderful speakers for making the day so awesome. There were so many talks running simultaneously it was impossible to watch them all, but lucky for you, the whole 9 hours is available on-demand. Watch it at your leisure anytime here.

Featured speakers

Dr. Rishi Manchanda
Dr. Rishi Manchanda
President + CEO
Sarah Novotny
Sarah Novotny
Open source wonk
Brian Douglas
Brian Douglas
Staff developer advocate
Erin McKean
Erin McKean
Developer relations program manager