An open-source Unix operating system:

Clone this repo:
  1. ba5494d 14163 zfs-tests: remove_raidz.ksh is broken by Toomas Soome · 10 months ago master
  2. b340385 14127 ld(1) can double free when cleaning up by Richard Lowe · 3 weeks ago
  3. 3873d74 14158 unused GCC versions should be removed from Makefile.master (etc.) by Richard Lowe · 10 days ago
  4. 0f2a843 14165 zpool man page needs to document implicit checkpoint discard by Brian Bennett · 9 days ago
  5. 1672d29 14178 zloop needs to be updated with new zdb and ztest paths by Yuri Pankov · 5 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.