The directory / Operating systems

Operating systems

Explore open-source operating systems.

Operating systems

18 tools

AlmaLinux OSCommunity-owned, forever-free enterprise Linux distribution, compatible with RHEL and governed by its own foundation.Operating systemsPer-package licenses10.2 / 9.8 Support project
BlackArchArch-based penetration testing distribution with a rolling repository of more than 2,800 security tools, installable onto an existing Arch system.Operating systemsPer-package licenses2023.05.01 Support project
CalyxOSAn Android-based phone operating system with privacy-focused defaults for a specific supported-device list.Operating systems · SecurityMultiple (component-specific)8.0.5.20 · 2026-11-03 Support project
DebianCommunity-built universal operating system, the base for many other distributions.Operating systemsPer-package licenses13.7 Support project
Fedora®Community Linux distribution with Workstation, Server and other focused editions.Operating systemsPer-package licenses45 Support project
FreeBSDUnix-like operating system with an integrated base system, jails and a large ports collection.Operating systemsBSD-2-Clause15.1-RELEASE Support project
GrapheneOSA privacy- and security-focused Android-based operating system for specifically supported devices.Operating systems · SecurityMultiple (component-specific)2026110800 · 2026-11-08 Support project
Kali LinuxDebian-based Linux distribution for penetration testing, security auditing and digital forensics.Operating systemsPer-package licenses2026.3 · 2026-10-26 Support project
LineageOSAn Android-based aftermarket operating system with device-specific builds for selected phones and tablets.Operating systemsMultiple (component-specific)24.0 · 2026-10-11 Support project
Linux MintFriendly, familiar desktop Linux with the Cinnamon desktop, based on Ubuntu and Debian.Operating systemsPer-package licenses22.3 Support project
NixOSDeclarative Linux distribution built on the Nix package manager, with atomic upgrades and rollbacks.Operating systemsPer-package licenses26.05 Support project
OmarchyOpinionated, installable Linux OS by DHH: a curated Arch and Hyprland desktop that sets up a finished system in minutes.Operating systemsMITv4.5.0 Support project
openSUSECommunity Linux distributions with rolling Tumbleweed and regular-release Leap choices.Operating systemsPer-package licensesTumbleweed (rolling)Support project
Parrot OSDebian-based Linux distribution for cybersecurity, privacy and everyday development, in Security, Home and other editions.Operating systemsPer-package licenses7.4 Support project
Pop!_OSUbuntu-based desktop Linux from System76 with its own COSMIC desktop.Operating systemsPer-package licenses24.04 LTS Support project
Qubes OSSecurity-focused desktop operating system that isolates your work into separately trusted virtual machines called qubes.Operating systemsPer-package licenses4.3.2 Support project
TailsAmnesic live operating system on a USB stick: routes connections through Tor and leaves no trace on the computer by default.Operating systemsPer-package licenses7.17 · 2026-11-11 Support project
UbuntuPopular Debian-based Linux desktop and server from Canonical, with long-term support releases.Operating systemsPer-package licenses26.04.1 LTS Support project

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