Kali Linux
Kali Linux (formerly known as BackTrack) is a Debian-based distribution with a collection of security and forensics tools. It features timely security updates, support for the ARM architecture, a choice of four popular desktop environments, and seamless upgrades to newer versions.
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Xubuntu
Xubuntu is a community-developed operating system based on Ubuntu. It comes with Xfce, which is a stable, light and configurable desktop environment.