Operating systems

Windows Server

221.5K sites

Windows Server is a brand name for a group of server operating systems.

Ubuntu

204K sites

Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Debian

56.4K sites

Debian is a Linux software which is a free open-source software.

UNIX

37.5K sites

Unix is a family of multitasking, multiuser computer operating systems.

CentOS

23.7K sites

CentOS is a Linux distribution that provides a free, community-supported computing platform functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL).

Red Hat

6.4K sites

Red Hat is an open-source Linux operating system.

AlmaLinux

5.8K sitesOpen source

AlmaLinux is an open-source, community-driven Linux operating system that fills the gap left by the discontinuation of the CentOS Linux stable release.

FreeBSD

2.4K sites

FreeBSD is a free and open-source Unix-like operating system.

Gentoo

674 sites

Gentoo is a free operating system based on Linux.

Fedora

626 sites

Fedora is a free open-source Linux-based operating system.

SUSE

236 sites

SUSE is a Linux-based server operating system.

Scientific Linux

65 sites

Scientific Linux (SL) is a free open-source operating system based on Red Hat Enterprise Linux.

Raspbian

29 sites

Raspbian is a free operating system for the Raspberry Pi hardware.

Darwin

6 sites

Darwin is the open-source operating system from Apple that forms the basis for macOS.

SunOS

2 sites

SunOS is a Unix-branded operating system developed by Sun Microsystems for their workstation and server computer systems.

YunoHost

2 sitesOpen source

YunoHost is a server operating system that is free and open-source, allowing users to host their own web applications, email services, and other online tools. It is based on Debian GNU/Linux.

Alpine Linux

Open source

Alpine Linux is a security-oriented, lightweight Linux distribution based on musl libc and busybox.

Hirschmann HiOS

Hirschmann HiOS is an operating system for industrial network equipment.

UniFi OS

UniFi OS is the operating system for UniFi products, which provides a user interface.

Windows CE

Windows CE is an operating system designed for small footprint devices or embedded systems.