Nagios was originally designed to run under Linux, but also runs well on other Unix variants.

In X11 (Linux and other Unix variants)

A number of Unix variants use GAS.

This Unix variant would become home to the first version of Microsoft's word processor, Microsoft Word.

Across the Unix variants hundreds of configuration-file formats exist.

In 1990, WingZ ports started appearing for a number of other platforms, mostly Unix variants.

During the late 1980s, most commercial Unix variants were derived from either System V or BSD.

Alternative names include baron in BeOS and avatar on some Unix variants.

A+ runs on many Unix variants, including Linux.

The development environment is under Linux, but also runs well on other Unix variants and Windows.