Arch Linux Based · Open Source

The OS That

Ultimum OS is an ultra-lightweight, Arch-based operating system engineered to breathe new life into aging laptops and forgotten smartphones. Zero bloat. Maximum performance.

Track Development View Platforms →
Ultimum OS system concept
// Mission Statement
Power. Precision. Ultimum.
Eliminate software bloat. Optimize every kernel call. Restore the hardware you love.
Build Status: Active
Upstream: Arch Linux
0MB
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0 Bloat
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Open Source
// target_platforms

Two Builds.
One Mission.

Ultimum OS is architected across two branches, each optimized for the specific memory constraints, display profiles, and input methods of its target hardware class.

The Laptop Build
Custom Archiso profiles engineered to boot under 500MB of RAM on decade-old x86_64 hardware. Bringing lightweight compositors to machines everyone gave up on.
x86_64Archiso WaylandLXQt / Swayzram
The Phone Build
Modular Arch Linux ARM adapted for touchscreen hardware. Custom device trees and mobile shells bring desktop-grade control to smartphones with mainline kernel support.
ARMArch Linux ARM PhoshMainline KernelDevice Trees
// system_architecture

Engineered at the Core.

01
Memory Compression

zram and zswap kernel modules enabled by default — eliminating slow disk-swap penalties on mechanical drives and giving RAM-starved machines massive effective memory headroom.

02
Minimal Init Flow

Streamlined systemd target chain. Background indexers, telemetry daemons, and unnecessary logging services are stripped from the boot sequence permanently.

03
Adaptive Interface Layer

Compositor configurations that dynamically adjust rendering pipelines and scaling profiles for both 15-inch laptop displays and 5-inch mobile screens.

04
Rolling Arch Base

Built on Arch Linux's rolling release model — no stale packages, no vendor lock-in. Full AUR access for any software the user needs to layer on top.

ultimum@arch ~ neofetch
$neofetch
## Ultimum OS v0.1-alpha
OS:Ultimum x86_64
Kernel:6.9.3-arch1-1
Shell:zsh 5.9
DE:Sway (Wayland)
RAM:487MB / 4096MB
CPU:Intel i5-4210U (4)
zram:enabled [lz4]
## status: running clean
$
// alpha_access

Be First to Boot.

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