From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
I discard any distro that does not define itself as GNU/Linux and that has difficulties to use the term free as in freedom. Ubuntu and Linux Mint are some of those.
Ubuntu: Ubuntu has always been free to download, use and share. We believe in the power of open source software; Ubuntu could not exist without its worldwide community of voluntary developers.
Linux Mint: It is completely free of cost and almost all of its components are Open Source. Linux Mint stands on the shoulder of giants, it is based on Debian and Ubuntu.