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Free and Open Source Silicon Foundation

Working together for Free and Open Source Silicon

The FOSSi (Free and Open Source Silicon) Foundation is a not-for-profit organization with the support the growing community of open source silicon hardware. We do this with a variety of activities and through Google Summer of Code we bring together enthusiastic mentees and outstanding projects. Under our umbrella are open source silicon hardware projects, operating systems and compilers for such projects, tools for electronic design automation and the related ecosystem.

  • verilog
  • vhdl
  • risc-v
  • compiler
  • hardware
  • debug
  • simulation
  • electronic design tools

Project ideas

16 ideas on its 2026 ideas page; of the 15 that state a difficulty: 1 easy, 5 medium, 9 hard. Sizes: 8 medium, 8 large. 14 mentors named.

  1. Surfer memory and wide array support medium medium
  2. cocotb v2 Code Migration Helper medium hard
  3. Generate Counter Examples for Bounded Model Checks in CIRCT medium medium
  4. OpenRISC Linux Feature Development large hard
  5. Generic MinimumLinuxBoot for RTL Simulations large hard
  6. Enabling OpenROAD-based Power Estimation for OpenPiton Manycore Systems large hard
  7. Using AI to Improve Open-Source IP large medium
  8. LiteX SMP SoC for OpenRISC large hard
  9. Improve CIRCT's Verilog Frontend medium hard
  10. Open Educational Content Development medium
  11. Architectural Improvements to OpenPiton+Ariane for RISC-V Profile Compliance medium medium
  12. Cohort++ large hard
  13. OpenRISC Benchmarking and Performance improvements large hard
  14. Adding TL-Verilog Support to Surfer large hard
  15. ZynqParrot RISC-V Tracer medium medium
  16. BlackParrot UVM Testbenches medium easy

Read the ideas page. Ideas are for scope reference; never copy one into a proposal.

History

In GSoC since 2016, 11 years. Projects per year: '16: 3, '17: 4, '18: 6, '19: 7, '20: 4, '21: 11, '22: 8, '23: 5, '24: 6, '25: 5, '26: 5.

On GitHub

23 repositories pushed to in the last year. Main languages: Verilog (11), Python (7), Ruby (2), Jupyter Notebook (1), Nix (1), Vue (1).

Links and channels

go deeper in your terminal
git-into-gsoc org "Free and Open Source Silicon Foundation" --shortlist
git-into-gsoc repos "Free and Open Source Silicon Foundation"
git-into-gsoc issues --org "Free and Open Source Silicon Foundation"
or ask your assistant:
"Which Free and Open Source Silicon Foundation repositories merge
newcomers' pull requests, and which beginner
issues are still free?"

Those commands read live data: which repositories merge outside pull requests, and which beginner issues nobody has claimed. Install in two minutes.