Distros

The OpenBSD project produces a free, multi-platform BSD 4.4-based UNIX-like operating system. Its efforts emphasize portability, standardisation, correctness, proactive security and integrated cryptography. The project also develops the widely-used and popular OpenSSH (OpenBSD Secure Shell) software, which provides encrypted communication sessions over a computer network using the SSH protocol.

openEuler is an open source project operated by the OpenAtom Foundation. It is a digital infrastructure distribution which can fit into a wide variety of server, cloud computing, edge computing, and embedded deployments. openEuler is compatible with multiple CPU architectures (including x86_64 servers, cloud environments, ARM-powered embedded devices, and RISC-V boards) and suitable for a wide range of environments. The project releases a long-term support (LTS) version every two years in order to provide a stable platform for enterprise users. A new openEuler interim version is released every six months to provide more up to date technologies. While openEuler focuses on server deployments desktop environments (including UKUI, Deepin, GNOME, and Xfce) are available.

OpenIndiana is a continuation of the OpenSolaris operating system. It was conceived during the period of uncertainty following the Oracle takeover of Sun Microsystems, after several months passed with no binary updates made available to the public. The formation proved timely, as Oracle discontinued OpenSolaris soon after in favour of Solaris 11 Express, a binary distribution with a more closed development model to début later this year. OpenIndiana is part of the illumos Foundation, and provides a true open-source community alternative to Solaris 11 and Solaris 11 Express, with an open development model and full community participation.

openKylin is a Chinese desktop Linux distribution which runs the Kylin and UKUI desktop environments. Both Wayland and X11 sessions are available out of the box. The project is a member of the Debian family and can use APT package management tools. It also features a custom package format which is combined with a software centre. openKylin is also a proving ground for custom utilities which assist the user in managing the operating system.

openmamba GNU/Linux is a distribution for personal computers that can be used on notebooks, desktops, servers and Raspberry Pi computers. It works as an installable live DVD/USB images, offering one of two desktop environments: KDE Plasma or LXQt. The distribution uses RPM packages managed through the DNF package manager. Software can also be fetched and installed from Flatpak repositories.

The OpenMandriva distribution is a full-featured Linux desktop and server, sponsored by the OpenMandriva Association. It was based on ROSA, a Russian Linux distribution project which forked Mandriva Linux in 2012, incorporating many of Mandriva's original tools and utilities and adding in-house enhancements. The goal of OpenMandriva is to facilitate the creation, improvement, promotion and distribution of free and open-source software in general, and OpenMandriva projects in particular. OpenMandriva has traditionally been a fixed release distribution, but in 2023 the project began releasing an alternative rolling branch called ROME.