(brand/fork-favicon.svg)  (favicon-32.png)  (favicon-16.png)  (https://freecore.org/apple-touch-icon.png)          (index.html)         FreeCORE (assets/index-CLCcJOk0.css)  (index.html)         FreeCORE   (index.html) Home (https://freecore.org/install) Install (https://docs.freecore.org) Documentation  FreeCORE  TrueNAS® CORE — continued.   Lineage FreeCORE descends from FreeNAS and TrueNAS® CORE, and builds on(https://www.freebsd.org) FreeBSD and(https://openzfs.org) OpenZFS . FreeNAS → TrueNAS→ FreeCORE   Train       13.3 base  15.0 current (https://freecore.org/changelog) (changelog )  15.1 (https://freecore.org/roadmap) next                 Project FreeCORE carries the TrueNAS CORE 13.3 system forward as an independently maintained operating system on FreeBSD. 15.0-U1 is stable. TrueNAS CORE 13.3 systems upgrade straight to 15.0 in place, then continue on the project’s update train.   Install guide (https://freecore.org/install) freecore.org/install   downloads (https://updates.freecore.org/FreeCORE/FreeCORE-15.0-U1.iso) FreeCORE-15.0-U1.iso    in-place upgrade fetch https://freecore.org/freecore-enroll.sh && sh freecore-enroll.sh        Source code (https://codeberg.org/freecore) codeberg.org/freecore   mirror (https://github.com/freecore-project) github.com/freecore-project   issues (https://codeberg.org/freecore/freecore/issues) report a reproducible bug   irc (https://web.libera.chat/#freecore) #freecore on Libera.Chat  contact (mailto:hello@freecore.org) hello@freecore.org   security (mailto:security@freecore.org) security@freecore.org     Thanks FreeNAS · TrueNAS CORE · FreeBSD · OpenZFS Original authorship is credited in the source’s license headers.   FreeBSD® 15 · OpenZFS © 2026 The FreeCORE Project Team. FreeCORE is an independent fork of TrueNAS® CORE 13.3, rebased on FreeBSD 15 after upstream development of CORE ended. FreeCORE is an independent project, not affiliated with, sponsored by, or endorsed by iXsystems, Inc. or The FreeBSD Foundation. TrueNAS® is a registered trademark of iXsystems, Inc. FreeBSD® is a registered trademark of The FreeBSD Foundation.