Q1 2026 was a banner quarter for open source collaboration, as shown by the GitHub Innovation Graph’s economy collaborators metric, part of the latest data release. Outbound collaboration, defined as the sum of git pushes and pull requests sent from developers in one economy to public repositories in another economy, grew by 16% quarter-over-quarter from Q4 2025 to Q1 2026.

That’s the second highest quarter-over-quarter growth rate we’ve seen since 2020. The highest was in Q2 2020, with a 21% growth rate, when many of us suddenly and collectively decided to use our computers more.

In third place was Q1 2023, with a 9% growth rate. This was the first quarter after a research lab blogged about a new website they made, and they enticed users to sign up and file bug reports by offering a chance to win up to $500 in API credits. Evidently, sweepstakes are unreasonably effective motivators.

Metrics by economy

While it’s clear that collaboration is growing globally, plotting these and other metrics separately by economy highlights the different trajectories of the world’s developer communities:

Now, it’s your turn to analyze the underlying datasets yourself for interesting pursuits, such as improving how economic growth is measured or estimating the impact of a research lab’s new website. While we have no sweepstakes to offer (for now), we think there are fascinating data stories strewn throughout these CSVs just waiting to be told.

One example might be the impressive recent growth in Syria starting in Q4 2025, which coincides with changes we made to enable broader access to GitHub functionality following the relaxation of sanctions and export controls on the country:

We’re grateful to the developers who advocated for these changes and the communities that continue to help spread the word, such as GitSyria. Thanks to their efforts, we’re happy to share that we’ve been able to provide the GitHub Student Developer Pack to over 8,000 verified Syrian students in just the last six months.

Helping maintainers manage collaboration

While greater collaboration leads to many benefits, we recognize that the rapid increase in contribution volume has strained several communities. Ashley Wolf, our Director of Open Source Programs, wrote about the Eternal September of Open Source in February 2026, describing how maintainers are managing new contribution dynamics and what we’re doing to try to help. Features we’ve shipped include:

• Pull request limits: You can set a maximum number of open pull requests that users without write access may have open in your repository at one time, giving you a more proactive way to manage contribution volume.
• Repo-level pull request and issue controls: Gives maintainers the option to limit pull request and issue creation to collaborators or disable pull requests and issues entirely.
• Pinned comments on issues: You can now pin a comment to the top of an issue from the comment menu.
• Banners to reduce comment noise: Experience fewer unnecessary notifications with a banner that encourages people to react or subscribe instead of leaving noise like “+1” or “same here.”
• Pull request performance improvements: Pull request diffs have been optimized for greater responsiveness and large pull requests in the new files changed experience respond up to 67% faster.
• Faster issue navigation: Easier bug triage thanks to significantly improved speeds when browsing and navigating issues as a maintainer.
• Temporary interaction limits: You can temporarily enforce a period of limited activity for certain users on a public repository.

Do you have feedback on the directions we’re exploring? Share it in the community discussion.

Share what is working for your projects, where the gaps are, and what would meaningfully improve your experience maintaining open source.

Written by

Staff Software Engineer, CELA

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