Kubuntu
Kubuntu is a Linux distribution, a derivative of Ubuntu, with KDE as its default desktop. With a bit of configuration, it can be used by Windows or Macintosh users with very little training. It has a large community providing help to people who like to customize their operating system. Some users who don't care for Ubuntu's Unity desktop opt for Kubuntu, Lubuntu, Xubuntu, or Mint.
Kubuntu is:
- GNU Linux
- Debian-based package system and core work
- KDE desktop