http://distrowatch.com/table.php?distribution=solaris
Solaris is a computer operating system, the proprietary Unix variant developed by Sun Microsystems. Early versions, based on BSD UNIX, were called SunOS. The shift to a System V code base in SunOS 5 was marked by changing the name to Solaris 2. Earlier versions were retroactively named Solaris 1.x. After version 2.6, Sun dropped the "2." from the name. Solaris consists of the SunOS UNIX base operating system plus a graphical user environment. Solaris is written in a platform-independent manner and is available for SPARC and x86 processors (including x86_64). Historically, Solaris used to be a proprietary operating system, however, starting from version 10, its licence has changed and the product is now distributed free of charge for any system or purpose, while its source code is available from OpenSolaris.org under a license approved by Open Source Initiative (OSI).
http://distrowatch.com/table.php?distribution=ubuntu
Ubuntu is a complete desktop Linux operating system, freely available with both community and professional support. The Ubuntu community is built on the ideas enshrined in the Ubuntu Manifesto: that software should be available free of charge, that software tools should be usable by people in their local language and despite any disabilities, and that people should have the freedom to customise and alter their software in whatever way they see fit. "Ubuntu" is an ancient African word, meaning "humanity to others". The Ubuntu distribution brings the spirit of Ubuntu to the software world.
Na svetu postoje samo 2 OS-a: 1. Mint, 2. svi ostali!