XerisOS

Developers

x86-64 asm + freestanding C NASM x86_64-elf-gcc Apache-2.0

Codebase

Repository map

Repository layout
PathWhat lives there
boot/UEFI loader (BOOTX64.EFI) + legacy MBR/Stage-2 + installer
src/kernel.asmKernel entry + main loop
src/core/IDT, APIC/SMP, memory, FAT32, scheduler, syscalls
src/drivers/NIC, storage, USB, audio, input, video, (WIP) GPU
src/net/ARP → IP → TCP/UDP → DNS → TLS 1.3 → HTTP
src/crypto/ChaCha20, Poly1305, SHA-256, X25519, PNG/JPEG decoders
src/gui/Desktop, window manager, CSS/HTML engine, JS + WebGL
src/apps/Browser, editor/IDE, terminal, files, Ari chat, games
src/toolchain/A small on-device C compiler
phase0/Shared implementation and tests; its HTTP/inflate code is required by the current kernel build
tools/Host-side Python + C test harnesses
third_party/Required NetSurf library source with upstream notices/build tools, plus small OBS/Mesa/SDK preparation recipes
MakefileBuild system (auto-detects OS)
setup.{bat,sh}One-time setup

README.md · Repository layout — phase0/, tools/, third_party/ from CONTRIBUTING.md and SOURCE_PACKAGE.txt

CI

Tests

Workflow
.github/workflows/tests.yml
On
push · pull_request · workflow_dispatch
Job
host-tests · ubuntu-latest
Toolchain
nasm gcc python3 python3-venv nodejs
Suite
bash tools/run_all_tests.sh
phase0
cd phase0 && sh tests/run_all.sh

Q&A

Questions

Does it need the Ari model to boot?

The model weights are large and distributed separately (not in this repo); XerisOS boots and runs fine without them (the Ari app shows "no model").

MODELS.md

README.md
How do I report a security issue?

Please do not open a public issue for a suspected security vulnerability. Report it privately to the maintainer at [email protected] with the subject line XERISOS SECURITY.

Include a minimal reproducer (a packet capture or a small HTML/image file) plus the serial log.

Security

SECURITY.md · KNOWN_ISSUES.md
What licence?

XerisOS is released under the Apache License 2.0 — a permissive license with an explicit patent grant. Third-party and vendor components are documented in NOTICE.

By contributing, you agree that your contributions will be licensed under the project's Apache License 2.0.

Distribution checklist · About

README.md · CONTRIBUTING.md

Next

Docs