OpenIndiana is described as 'Robust enterprise operating system, based on the illumos kernel. It is open source, free to use, community developed, and suitable for servers and desktops' and is a operating system in the os & utilities category. There are more than 50 alternatives to OpenIndiana for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Mac apps. The best OpenIndiana alternative is Linux Mint, which is both free and Open Source. Other great apps like OpenIndiana are Ubuntu, Debian, Fedora and Arch Linux.