An open-source Unix operating system:

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  1. 90fd277 13427 ppm: overflow in conversion by Toomas Soome · 9 months ago master
  2. dca2b4e 5750 ddi_ffs(9f)/ddi_fls(9f) are 64-bit aware by Robert Mustacchi · 10 days ago
  3. 2312163 13466 Jan 2021 hwdata update by Robert Mustacchi · 4 days ago
  4. c8be571 13464 Want pchtemp support for 400 series desktop PCH by Robert Mustacchi · 4 days ago
  5. 4955144 13458 bhyve flushes ASID needlessly by Patrick Mooney · 7 days ago


This is the core illumos source tree.


The illumos build must be run on an illumos-based operating system. See the Building illumos section of our documentation for detailed instructions.


Code changes must be reviewed and tested. If you'd like to submit a change for inclusion in the project, please see the Contributing to illumos guide in our documentation.


The illumos community is small but active. We welcome everybody who would like to use the software and participate in the community -- whether you've decades of experience in systems software, or you're just getting started; whether you work for a company that uses illumos, or you just find it personally interesting.

Our Community guide includes details about our Mailing Lists and IRC channels.

Code of Conduct

Participation in our community spaces, and in the project in general, are covered by our Code of Conduct. By participating in the project you agree to abide by its terms.


Most of the existing code is licensed under the CDDL and we expect new code will generally be under this license as well. Modifications of existing code may not alter the original license terms. Integrations of code from upstream sources that use another open source license are permissible, subject to approval of the advocates.