# System.capabilities.os

#### Availability

Flash Player 6.

#### Usage

    System.capabilities.os

#### Description

Property; a string that indicates the current operating system. The `os` property can return the following strings: "`Windows XP`", "`Windows 2000`", "`Windows NT`", "`Windows 98/ME`", "`Windows 95`", "`Windows CE`" (only available only in the Flash Player SDK, not in the desktop version), `"Linux"`, and "`MacOS`". The server string is `OS`.