Mac OS X Leopard
From OS-Tan Collections Wiki
Mac OS 10.5, known as Leopard is the latest version of the Mac OS and has a few different representations. The first known representation is a pink-haired leopard girl in a teal+black+white dress with a Time Machine logo brooch.
The second known one is the most common, a teal-haired leopard girl with her hair usually in a ponytail with a black bow, wearing a futuristic outfit with a teal dress, silver boots and gloves and carries a Time Machine pocketwatch with her, which she uses for time traveling which she can also use to her advantage for warping from one place to another.
The third rendition is a 'magical girl' Leopard-tan with short blue hair, white gloves, black boots and wears a green+black minidress with a matching shawl with a Bootcamp logo brooch on it. She is also able to transform into XP-tan as a reference to Bootcamp and being able to boot into XP. Another accessory the 'magical girl' Leopard-tan often carries is a blue umbrella.