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  • C++ 88.1%
  • JavaScript 4.5%
  • HTML 3.3%
  • C 0.9%
  • CMake 0.8%
  • Other 2.3%
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Lucas Chollet decd19d317 Kernel: Use HPET::initialized() to check if the HPET is available
Even if it is a synonym of `can_query_precise_time()` in practice, using
`HPET::initialized()` directly seems less fragile.
2026-07-22 14:54:40 +02:00
.devcontainer Meta: Switch to clang-format-20 as the standard formatter 2025-10-10 00:02:50 +02:00
.github CI: Bump actions/checkout in / 2026-07-22 08:09:34 +02:00
AK AK: Include StdShim.h in NeverDestroyed.h 2026-06-26 23:07:35 +02:00
Base Base: Don't disable network adapter "ep1s0" by default 2026-06-26 13:11:01 +02:00
Documentation Kernel/Net: Integrate the E1000E driver into the E1000 driver 2026-07-19 18:10:12 +02:00
Kernel Kernel: Use HPET::initialized() to check if the HPET is available 2026-07-22 14:54:40 +02:00
Ladybird Ladybird+MacVideoPlayer: Align post_event with other event loop impls 2026-06-29 10:07:38 -04:00
Meta Kernel/Net: Integrate the E1000E driver into the E1000 driver 2026-07-19 18:10:12 +02:00
Ports Ports: Update ffmpeg to 8.1.1 2026-06-09 21:02:08 +02:00
Tests Tests/LibPDF: Add a pdf covering rotation of different font types 2026-07-22 06:16:01 -04:00
Toolchain Toolchain: Update Jakt to latest commit 2026-07-18 20:33:18 +02:00
Userland LibGfx/JPEG2000: Pull dequantization step size computation out of loop 2026-07-22 08:53:37 -04:00
.clang-format Meta: Tweak .clang-format to allow single-line arrays in JSON 2025-11-15 08:09:03 -05:00
.clang-tidy Meta: Disable clang-tidy “implicit-bool-conversion” check 2025-01-25 18:05:28 +01:00
.editorconfig
.gitattributes
.gitignore Meta: Move .DS_Store rule to the bottom of the .gitignore file 2023-11-14 14:53:37 -05:00
.gn Meta: Automatically generate a compilation database for clangd 2023-11-14 14:29:35 -05:00
.mailmap Everywhere: Use my fancy new serenityos.org email address :^) 2025-10-09 20:48:14 +02:00
.pre-commit-config.yaml Meta: Migrate deprecated pre-commit stage names 2024-10-26 21:38:48 -04:00
.prettierignore Meta: Ignore auto-generated and incompatible files in prettier 2024-10-04 10:46:42 -04:00
.prettierrc
.ycm_extra_conf.py Everywhere: Stop using pc in our target triples 2026-03-13 20:59:49 +01:00
CMakeLists.txt Toolchain+Ports: Update GCC to 16.1.0 2026-05-06 10:46:02 +02:00
CONTRIBUTING.md Meta: Use American English spelling for license 2026-02-24 11:43:53 +01:00
flake.lock Nix: Update nixpkgs 2025-08-04 20:38:13 +02:00
flake.nix Toolchain/nix: Set the default formatter for the flake 2024-09-22 09:06:02 -04:00
LICENSE Meta: Update the year range in LICENSE to 2018-2026 :^) 2026-01-25 21:47:42 +01:00
README.md Meta: Update CI status badge URL 2025-08-01 21:24:14 +02:00
SECURITY.md Documentation: Remove reference to closed bug bounty program 2024-11-06 19:28:30 -05:00

SerenityOS

Graphical Unix-like operating system for 64-bit x86, Arm, and RISC-V computers.

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FAQ | Documentation | Build Instructions

About

SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.

Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix. This is a system by us, for us, based on the things we like.

You can watch videos of the system being developed on YouTube:

Screenshot

Screenshot as of c03b788.png

Features

  • Modern 64-bit kernel with pre-emptive multi-threading
  • Browser with JavaScript, WebAssembly, and more (check the spec compliance for JS, CSS, and Wasm)
  • Security features (hardware protections, limited userland capabilities, W^X memory, pledge & unveil, (K)ASLR, OOM-resistance, web-content isolation, state-of-the-art TLS algorithms, ...)
  • System services (WindowServer, LoginServer, AudioServer, WebServer, RequestServer, CrashServer, ...) and modern IPC
  • Good POSIX compatibility (LibC, Shell, syscalls, signals, pseudoterminals, filesystem notifications, standard Unix utilities, ...)
  • POSIX-like virtual file systems (/proc, /dev, /sys, /tmp, ...) and ext2 file system
  • Network stack and applications with support for IPv4, TCP, UDP; DNS, HTTP, Gemini, IMAP, NTP
  • Profiling, debugging and other development tools (Kernel-supported profiling, CrashReporter, interactive GUI playground, HexEditor, HackStudio IDE for C++ and more)
  • Libraries for everything from cryptography to OpenGL, audio, JavaScript, GUI, playing chess, ...
  • Support for many common and uncommon file formats (PNG, JPEG, GIF, MP3, WAV, FLAC, ZIP, TAR, PDF, QOI, Gemini, ...)
  • Unified style and design philosophy, flexible theming system, custom (bitmap and vector) fonts
  • Games (Solitaire, Minesweeper, 2048, chess, Conway's Game of Life, ...) and demos (CatDog, Starfield, Eyes, mandelbrot set, WidgetGallery, ...)
  • Every-day GUI programs and utilities (Spreadsheet with JavaScript, TextEditor, Terminal, PixelPaint, various multimedia viewers and players, Mail, Assistant, Calculator, ...)

... and all of the above are right in this repository, no extra dependencies, built from-scratch by us :^)

Additionally, there are over three hundred ports of popular open-source software, including games, compilers, Unix tools, multimedia apps and more.

How do I read the documentation?

Man pages are available online at man.serenityos.org. These pages are generated from the Markdown source files in Base/usr/share/man and updated automatically.

When running SerenityOS you can use man for the terminal interface, or help for the GUI.

Code-related documentation can be found in the documentation folder.

How do I build and run this?

See the SerenityOS build instructions or the Ladybird build instructions.

The build system supports a cross-compilation build of SerenityOS from Linux, macOS, Windows (with WSL2) and many other *Nixes. The default build system commands will launch a QEMU instance running the OS with hardware or software virtualization enabled as supported.

Ladybird runs on the same platforms that can be the host for a cross build of SerenityOS and on SerenityOS itself.

Get in touch and participate!

Join our Discord server: SerenityOS Discord

Before opening an issue, please see the issue policy.

A general guide for contributing can be found in CONTRIBUTING.md.

Authors

And many more! See here for a full contributor list. The people listed above have landed more than 100 commits in the project. :^)

License

SerenityOS is licensed under a 2-clause BSD license.