Phase 0|Accepting early interest

CytherraOS

Terminal-first. AI-native. Built for tablets.

A Linux operating system designed from scratch for ARM64 tablets. CytherraShell, Claude Code, and MCP servers ship out of the box.

Linux 6.x KernelWayland (Rust)CytherraShell (Rust)GTK4 AppsARM64
cytherra-shell
# CytherraShell -- object pipelines, not string parsing

cysh $ sysinfo | select cpu, memory, battery
{ cpu: "Cortex-A78 @ 2.8GHz", memory: "6.2/8 GB", battery: "87%" }

cysh $ claude "refactor this function to use async/await" --file src/main.rs
Analyzing src/main.rs... 3 functions updated. Diff saved to .claude/patches/001.diff

cysh $ mcp stripe customers.list --limit 5 | select name, email
[
  { name: "Acme Corp", email: "billing@acme.com" },
  { name: "Nexus Labs", email: "ops@nexuslabs.io" },
  ...
]

cysh $ voice "deploy the staging branch"
Deploying branch staging to cytherra-staging.fly.dev... done in 14s

Built Different

Every layer designed for developers who live in the terminal.

Terminal-First Design

The terminal is the primary interface, not an afterthought. Every system action is a command away.

AI-Native

Claude Code, OpenClaw, and NemoClaw run directly from the shell. AI is woven into the OS, not bolted on.

MCP Built-In

Stripe, Supabase, Slack, and Notion ship as pre-connected MCP servers. Your tools are always ready.

CytherraShell

A Rust-based shell with object pipelines and structured output. Pipe JSON, not strings.

Multimodal Input

Text, voice, camera, and files all flow through one unified input bar. Talk to your OS.

Touch-Optimized

Designed for 9-10" ARM64 tablets with gesture navigation, split views, and swipe commands.

Built-in Apps

IDE, browser, file manager, and Kanban board included. Everything a developer needs, nothing extra.

Open Source

Linux 6.x kernel, open OS, community device trees. Inspect, modify, and contribute to every layer.

Up and Running in 3 Steps

From bare tablet to full dev environment in minutes.

01

Get a Tablet

Any ARM64 tablet with 2 GB+ RAM. We maintain device trees for popular models, or wait for the Cytherra Arc.

02

Flash CytherraOS

Download the image, flash to an SD card or internal storage. Boot into CytherraShell in under 60 seconds.

03

Start Building

Claude Code is ready. MCP servers are connected. Open a terminal and ship your next project.

Two Editions

Full power or lightweight -- both run CytherraShell and Claude Code.

FeatureStandardLite
Minimum RAM
4 GB
2 GB
Compositor
Wayland (Rust)
Wayland (Rust)
CytherraShell
Claude Code Built-in
MCP Servers
All pre-installed
Core set
GTK4 Apps
Full suite
Essentials
Multimodal Input
Text + Voice
IDE
Full IDE
Lite editor
Browser
Kanban Board
---
OTA Updates

Purpose-Built Hardware

Tablets designed to run CytherraOS at full potential.

Coming 2027

Cytherra Arc

$349
  • 10.1" IPS display
  • 8 GB RAM / 128 GB storage
  • ARM64 octa-core
  • USB-C, Wi-Fi 6, BT 5.3
  • 7,000 mAh battery

Ships with CytherraOS Standard pre-installed. Open bootloader.

Coming 2027

Cytherra Arc Pro

$549
  • 10.5" AMOLED display
  • 16 GB RAM / 256 GB storage
  • ARM64 octa-core (high-perf)
  • Thunderbolt 4, Wi-Fi 6E, BT 5.3
  • 10,000 mAh battery
  • Stylus included

Ships with CytherraOS Standard pre-installed. Open bootloader.

Get Early Access

CytherraOS is in active development. Sign up to be notified when the first developer preview is available.

No spam. Just one email when the dev preview launches.