Offshoots of cancelled TrueNAS Core upgrade to FreeBSD 15
Exeunt zVault stage right; enter FreeCORE and BSDnas
Two new operating systems based on FreeBSD 15 have emerged as replacements for the cancelled TrueNAS Core. These new contenders, FreeCORE and BSDnas, aim to provide NAS box owners with a stable and reliable FreeBSD-based operating system. The primary reason for developing these alternatives is the cancellation of TrueNAS Core by its developer, iXsystems, in 2024.
TrueNAS Core was initially introduced in 2022 as an alternative to Linux, but faced compatibility issues due to the widespread use of Linux and difficulty transferring Linux knowledge to FreeBSD. The new operating systems, FreeCORE-15.0-U1 and BSDnas, are built on the latest FreeBSD 15 codebase, which was released in December 2025.
They carry forward the TrueNAS CORE 13.3 system and incorporate all the latest security fixes. FreeCORE has already migrated the TrueNAS Core web UI and other code over to FreeBSD 15, while BSDnas is based on the original TrueNAS Core 13.3 code, with iXsystems dependencies removed. Both operating systems claim to be fully compatible with the TrueNAS CORE 13.3 systems, allowing for a seamless upgrade process.
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