Tux, the penguin. The official mascot of Linux.
Development and releases
Original developer
Linus Torvalds
Current developer
Initial release1991</td></tr>
Latest release2015</td></tr></table></td></tr>
Kernel typeMonolithic
Package managerVaries
PlatformsOver twenty, including x86.
DerivativesSee Linux distributions
</td></tr></table> Linux is a free and open-source Unix-like operating system. Its defining component is the Linux kernel, but due to how compatible the Linux kernel is with other pieces of operating system software, such as desktop environments and package management software there are several different variants of Linux, or distributions. Due to the fact that the other software used to make Linux-based operating systems, besides the kernel, are usually developed by the GNU Project, Linux is sometimes also called GNU/Linux.