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  • C++ 88.2%
  • JavaScript 4.5%
  • HTML 3.3%
  • C 0.9%
  • CMake 0.8%
  • Other 2.2%
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Lucas Chollet 5a348231a8 SSHServer: Add an option to stub the server's private key
This allows the server to have a stable private key rather than
recreating a random one on every start.

This is obviously a major security issue, use at your own risk.
2026-03-23 18:05:56 +01:00
.devcontainer Meta: Switch to clang-format-20 as the standard formatter 2025-10-10 00:02:50 +02:00
.github CI: Bump docker/login-action from 3 to 4 2026-03-10 14:05:23 +01:00
AK AK: Remove recursion in sin(), cos() 2026-03-21 12:44:51 +01:00
Base Kernel+runc: Remove the pivot_root functionality in copy_mount syscall 2026-03-14 11:45:37 +01:00
Documentation Kernel+runc: Make unshare syscalls more fd-oriented 2026-03-14 11:45:37 +01:00
Kernel Kernel+runc: Remove the pivot_root functionality in copy_mount syscall 2026-03-14 11:45:37 +01:00
Ladybird Meta: Patch up Apple SDK headers to work with C++26 2026-01-04 13:47:22 +01:00
Meta SSHServer: Add the start of an ssh server implementation 2026-03-14 10:44:09 +01:00
Ports Ports: Build flex with -std=c17 2026-03-18 19:21:51 +01:00
Tests LibSSH+SSHServer: Add support for decrypting packets using ChaCha20 2026-03-23 12:43:36 +01:00
Toolchain Everywhere: Stop using pc in our target triples 2026-03-13 20:59:49 +01:00
Userland SSHServer: Add an option to stub the server's private key 2026-03-23 18:05:56 +01:00
.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
.gn
.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 LLVM to 22.1.0 2026-02-26 21:13:47 +01:00
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.