openSUSE: Leap and Tumbleweed
In short: openSUSE is a distribution with German roots in Nuremberg. Tumbleweed is the rolling variant, Leap the version with fixed releases.
In more detail: What is special is the configuration manager YaST (under Leap), the package manager zypper and Snapper for Btrfs snapshots. Tumbleweed is tested automatically with openQA before release.
In detail
- Tumbleweed: rolling release, always current, bundled after tests.
- Leap: fixed version, base shared with SUSE Linux Enterprise.
- Slowroll: intermediate stage with less frequently delivered updates.
- Desktop: KDE Plasma and GNOME are equal, plus Xfce and others.
- Special features: Btrfs with snapshots before every update, bootloader with return to snapshots, Open Build Service.
- Atomic: Aeon (GNOME) and Kalpa (KDE) as immutable variants.
See also: Release models: fixed, LTS and rolling, SUSE Linux Enterprise