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implicitfield d73edd67f3 Kernel: Dispatch signals in do_context_first_init 
To make this possible, the initial trap frame has been made visible to
the Thread class. This removes a now-unneeded call to
`enter_trap_no_irq` in `ProcessorBase::init_context` on x86-64 as
calling this is no longer necessary in order to give the idle thread a
valid trap frame.

Fixes #26804.
2026-06-17 14:00:39 +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 from 6.0.2 to 6.0.3 2026-06-11 11:48:53 +02:00
AK AK: Remove unused static members in JsonPath 2026-05-30 09:10:52 -04:00
Base Base: Add Landslide, Trombone emoji 2026-05-20 16:49:18 -04:00
Documentation Documentation: Add a document to explain how to connect to SSHServer 2026-04-08 13:43:19 +02:00
Kernel Kernel: Dispatch signals in do_context_first_init 2026-06-17 14:00:39 +02:00
Ladybird Everywhere: Remove iOS support 2026-04-06 15:44:56 +02:00
Meta Meta: Don't use fusermount when not available 2026-06-15 17:02:41 +02:00
Ports Ports: Update ffmpeg to 8.1.1 2026-06-09 21:02:08 +02:00
Tests Tests: Add some more ptrace test cases 2026-06-11 11:39:52 +02:00
Toolchain Meta: Fix BuildFuseExt2.sh with patch for linking with modern macFUSE 2026-06-15 17:02:41 +02:00
Userland Debugger: Implement backtrace command 2026-06-16 18:48:27 +02:00
.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
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.gitattributes Repository: Protect port patches from CRLF/LF normalization 2022-01-12 01:08:38 +01:00
.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 Meta: Move prettier config files to the root of the repository 2020-08-24 18:21:33 +02:00
.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

README.md

SerenityOS

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

GitHub Actions Status Fuzzing Status Discord

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.