The free, fast and secure Linux desktop.

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LordOS is a free GNU/Linux distribution based on Debian, with its own desktop environment: a display server and Wayland compositor written in C, its own interface engine, and native apps made to feel calm, clear and private. It runs on 64-bit PCs and on the Raspberry Pi 5, and the Linux apps you already use (Chromium, Firefox, GTK and Qt apps) run alongside the native ones.

Everything you need. Nothing you don't.

A desktop of its own	Its own display server and Wayland compositor in C and its own interface engine, on a solid Debian base. Smooth on any 64-bit PC (amd64), and light enough for the Raspberry Pi 5 (arm64).
Private by design	Installable LordOS apps run isolated and ask before using your camera, microphone, files or network. You decide.
A firewall you can see	Watch every connection on a live world map, then allow or block it per app, by domain, address or network, and restrict camera, microphone, files and more. Subscribe to public blocklists of ads, trackers and malware, or deny everything a rule doesn't allow.
Passwords built in	A vault for passwords, 2FA codes and cards that unlocks with a password or a USB key.
Mail, Calendar, Contacts	Native apps for your accounts, with remote images blocked until you say so.
Your Linux apps too	Chromium, Firefox and GTK apps fit right in, with the same window frame and dark mode.
AI apps in the Store	A curated catalog: Claude Code, Claude Desktop, Visual Studio Code, Cursor, Codex CLI, goose, opencode, and llama.cpp and whisper.cpp to run models on your own computer, each from a pinned, verified source. The Store downloads over HTTPS.
System Information	Every piece of hardware and what LordOS makes of it, a report you can read before you copy it, and checks that try LordOS's security claims on your own computer.

Measured, not promised: on the final ISO test before the first release (a 0.7.0 build, 2026-10-18) the whole system idled at 465–487 MB of RAM, of which lord-server (the display server with the whole desktop) was 32–36 MB, and booted in about 16 s (see docs/ISO.md, "Final ISO test"). The released 0.8.5-beta, updated in place on a VMware VM with GPU composition, used 592 MB for the whole system about five minutes after sign-in and showed its first frame 7.4 s after the kernel started (results/0.8.5-beta/vmware-fusion). What is isolated today, exactly, is in docs/PRIVACY.md.

Get LordOS

The latest release is 0.8.5-beta (2026-10-27). Releases are signed and published on GitHub Releases and on lordos.org.

• PC (64-bit): a live and installable ISO, lordos-live-0.8.5-amd64.iso. Try it without installing.

• Raspberry Pi 5: a ready-to-flash image for SD card or NVMe, lordos-0.8.5-rpi5-arm64.img.xz, with fan control and our own kernel. The Raspberry Pi 5 is the only supported board.

• Already running LordOS? It updates in place from the signed repository on lordos.org.

• Already on Debian 13? Install LordOS on top of your current system with one command:

  curl -fsSL https://lordos.org/install.sh | sh

Verify your download. SHA256SUMS is signed with the LordOS release key (Ed25519), fingerprint c7155b8e6bbbb180f907381994d06af76d333016cd6f3facf67cadd053ea108e. See code signing and docs/SIGNING.md.

Status: beta. See CHANGELOG.md and docs/ROADMAP.md.

Documentation

• docs/README.md: the index of every document.
• The paper (docs/PAPER.md): vision, architecture, security model, performance and roadmap, with links to the source files.
• docs/ARCHITECTURE.md: components, processes and dependencies.

Repository map

• server/: lord-server (display server and Wayland compositor: DRM/KMS and evdev straight from the kernel, without X11, libdrm or libinput) plus lord-sessiond, lord-netd, lord-netperm, lord-fand and the sandboxed helpers (lord-media, lord-doc, lord-vault, lord-maild, lord-fetch, lord-tls, and LordBench's lord-bench, in development for 0.8.6).
• runtime/: @lordos/runtime, the React renderer for lord-server.
• sdk/: @lordos/sdk, the API for themes and apps.
• apps/: the native apps. See apps/README.md.
• themes/: complete desktops in React, swappable live. See themes/README.md.
• assets/: fonts, icons, the brand and Lumo, and the UI texts per language.
• tools/: ISO and Raspberry Pi image builders, the Debian installer, release signing, the website.
• web/: the lordos.org website.
• third_party/: QuickJS, stb, Monocypher and word lists, vendored (see THIRD_PARTY.md).

Building from source

On the development machine (needs Node.js):

npm install && npm run build        # bundles every theme with the SDK and the apps

On Debian 13 (see docs/VM-SETUP.md for the full list of packages):

make -C server -j4 && make -C server test

Images: docs/ISO.md (PC) and docs/RASPBERRY.md (Raspberry Pi 5).

Contributing and security

• CONTRIBUTING.md and the code of conduct.
• Found a vulnerability? Please read SECURITY.md and don't open a public issue.
• Bugs and ideas: how to report.

Support the project

LordOS is free and open source. If it makes your computer better, help us keep building it: lordos.org/#support.

Made by iPERFEX

LordOS is developed by iPERFEX. Meet Lumo, the guardian of LordOS, in the brand guide. To work with us on LordOS (sponsorship, collaborations, custom apps or support), see lordos.org/about.

License

MIT for LordOS's code (see LICENSE). Each third-party component keeps its own license (see THIRD_PARTY.md and docs/COMPLIANCE.md). The LordOS name, logo and Lumo are covered by the trademark policy.

Copyright © 2026 iPERFEX. All rights reserved for the website, brand and content; the code is free software under the MIT license.