DistroWatch # find even more distro's!

# apt package manager # point releases # slower updates # very stable

Debian # great DIY server OS, very stable

Pop!_OS # Ubuntu based, from US based System76 hardware vendor

Kali # security focus, penetration testing, ethical hacking

# pacman package manager # rolling releases # faster updates # can be less stable # AUR

Arch # lightweight and more advanced distro, comes with no GUI

Manjaro # comes with GUI options, more stable and user friendly

Mabox # Manjaro based, lightweight, many themes, highly customizable

Endeavor OS # terminal centric, highly customizable, has several GUI options

# dnf package manager # mixed point and rolling releases # primarily enterprise focused

Red Hat Enterprise Linux (RHEL) # US based, enterprise focused

Fedora # official upstream community focused project for Red Hat, good for server and desktop use

Rocky # 1:1 open source community build of RHEL

SUSE Linux Enterprise Server (SLES) # enterprise server focus

OpenSUSE # official community focused project for SUSE, targets sysadmins, developers, and desktop users

# Raspberry Pi and similar

Raspberry Pi OS # Official OS for Raspberry Pi, formerly Raspbian

Armbian # ARM port of Debian

DietPi # Lightweight Debian based server OS

NextCloud Pi # Self-hosted Nextcloud server OS

RetroPi # Retro game emulator using Raspbian, EmulationStation, and RetroArch very customizable

Lakka # Retro game emulator using on LibreELEC and RetroArch, Playstation style menu

Batocera # Retro game emulater using EmulationStation and RetroArch, very customizable

# harder to categorize distros # generally more advanced

Puppy # unique project, lightweight respins of various other distros

Alpine # lightweight security focused distro

Immutable distro's # new concept / trend. Read only root filesystem