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24.6.2025
The unitaryHACK Team

unitaryHACK 2025: That's a Wrap!

Dear Unitary Foundation community,

Last week, unitaryHACK 2025 officially came to a close. After 2+ weeks of working together, our community pushed out a record amount of code within the hackathon’s history (see below for the full stats)! Each year, unitaryHACK grows larger, and this is a testament to the importance and staying power of open source quantum computing.

It was such a pleasure to work with all of the maintainers and hackers for this fifth edition of the HACK. A hearty thank you to everyone who took part. We’re looking forward to working with you all next year!

Hack on,
The unitaryHACK Team

What is unitaryHACK?

unitaryHACK is a unique bug-bounty style program that rewards individuals at all experience levels, building professional skills by substantively supporting our most important open source tools and contributing to a more functional, and featured, quantum computing stack. 2025 welcomed the 5th edition of unitaryHACK, which ran from May 28 - June 11, 2025.

With the generous support of our sponsors and members, unitaryHACK was able to further expand our deeply engaged, global, and continuously growing developer community as well, with 65% of this year’s hackers claiming to have engaged in the open source computing world for the very first time. Take a look below for more stats and a full recap of this year’s HACK!

2025 Stats

This year, 172 bounties were closed and $19,710 was earned by 78 hackers (compared to 139 bounties, $13,142 earned, and 68 hackers in 2024)! Congratulations to everyone who closed bounties, contributed to projects in meaningful ways, and built relationships both online and in person during the two weeks of unitaryHACK.

The 2025 leaderboard can be found here. And keep an eye out for more blogposts coming soon about meaningful contributions and collaborations that came out of this year’s HACK!

2025hackstats

HACKdays

While the majority of unitaryHACK takes place digitally, the HACKday program’s goal is to foster in-person meetups with students and quantum enthusiasts to network and build community at local colleges and companies around the world.

6 HACKdays took place in the US, Portugal, Finland, Mexico, Switzerland, and Italy. Thank you to all of our HACKday organizers who spent their free time putting together these meaningful and fun in-person events at the University of Washington, the University of Coimbra, Aalto University, Universidad Nacional Autónoma de México, EPFL, and the QLASS Project!

2025hackdays

Projects + Maintainers

unitaryHACK thrives thanks to our incredible community of maintainers, who generously guide and support new contributors on their projects. This year included the increase of Rust projects to accelerate compilers like Qiskit and PyZX with backends like QuiZX and rustworkX (similar to NetworkX, but not in Python). We also saw projects that return to unitaryHACK year after year, like scqubits and KQCircuits, packages for modeling and simulating superconducting circuits and chips. And of course, we brought in new projects including Incospiquous, HUGR, Qualtran, and many others.

This year’s full cohort of projects is below! You can learn more about their projects and the issues they curated on the bounties page of the unitaryHACK website!

2025uhack

“Personally, it was very valuable to get new contributions on some issues, and also getting a new long-term contributor! The community is very supportive and welcoming, so I’m happy to see it develop and mature that way even more over time. We have a special thing being done here for the quantum industry.” — Eduardo Maschio, UF Micrograntee + Maintainer of the H-hat project

A Special Thank You to Our Sponsors

unitaryHACK continues to grow thanks to our generous sponsors. Here are some of the things that their support goes towards:

  • Health and sustainability of the quantum open source software community
  • Maintenance of early stage quantum open source projects
  • Bounty payout rewards for hackers in the community. Often, unitaryHACK is the first monetary support a developer receives in their career in quantum development!
  • Expansion of in-person HACK days for students and student groups around the world
  • Open source community initiatives including our Discord and the unitaryhack.dev website

Thank you once again to all who supported us this year!

ADVOCATE Level Sponsors

CHAMPION Level Sponsors

ADDITIONAL SUPPORTERS

Include Unitary Foundation and its Members:

Keep the Party Going by Purchasing uHACK and UF Merch!

In celebration of unitaryHACK, we opened a new version of the Unitary Foundation Shop. And for a limited time we have some awesome unitaryHACK 2025 merch available as well. If you’re interested in grabbing some merch, check out the shop today! Note that the unitaryHACK merch will leave the shop by the end of the month!