Tribblix is an open source operating system created by Peter Tribble that runs on illumos, combining vintage aesthetics with contemporary software. The project targets users who appreciate classic Unix interfaces while needing modern functionality.

Milestone 40 launched on June 12th, 2026, bringing updated packages and system improvements. The x86 version remains stable enough for daily use, with straightforward installation to hard drives and reliable operation for basic computing tasks.

On April 21st, the SPARC m34 ISO became available for download, alongside upgrade paths from m33. However, the SPARC variant lacks thorough testing and exhibits inconsistent hardware compatibility compared to its x86 counterpart.

The most significant change is the complete removal of 32-bit hardware support, narrowing Tribblix's compatibility scope. Despite SPARC limitations, the x86 build offers a functional niche OS for retro computing enthusiasts seeking illumos stability.