The OS for the
Individual.

A calm, dashboard-centric operating system where your email, files, and calendar share context—not just storage space.

Experience the Dashboard

A single interface for your entire digital life. Mail, Files, Calendar, and Home Automation—all in one place.

foundation-01.local
Drive Usage
234 GB / 2TB
Inbox
4 unread
Events Today
2 remaining
System
Healthy

Recent FilesDrive

Project_Alpha_Q3.pdf
Just now
Site_Assets_Final.zip
2h ago
contracts_signed_v2.docx
Yesterday

Unread MailMail

Stripe10:42 AM
Payout scheduled for Dec 29
GitHub09:15 AM
[cornerstone] Security alert

Up NextCalendar

28
December, Sunday
11:00 AM
Design Review
with Engineering Team
02:00 PM
No events
On-Device Intelligence

Unified Search.
Connected Intelligence.

CornerstoneOS indexes every file, email, photo, and message on your Foundation locally. Our on-device AI understands relationships between your work—finding the email thread that relates to a document, the meeting that sparked a project, the photo from that client dinner—all connected by context.

Cross-App Context

Search for a project name and find emails, files, calendar events, and notes—all connected intelligently.

Semantic Search

Search for 'the receipt from that Greek place' instead of keywords.

Local AI
All processing runs locally on your Foundation. Works with any email provider—Gmail, Outlook, Fastmail, IMAP, and more.

Built for Integration

Unified Context

Running locally means your email, files, and calendar can share intelligence without API limits or cloud bottlenecks. Instant search, unlimited context, seamless connections.

Matter-Native

Total home automation without the cloud. CornerstoneOS acts as a local bridge for all your smart devices, ensuring your home works even if the internet goes out.

Open Core

Built on a hardened Linux foundation with a custom application sandbox. Transparent, auditable, and engineered for long-term stability.

Community Driven

Open SDK. Open marketplace. Build integrations and share with the community.

Foundation's open architecture means anyone can build integrations that extend what your system can do. From media servers to home automation, photo backup to developer tools—if you can think it, you can build it.

Open SDK

Modern TypeScript SDK with full documentation and examples

Curated

Every integration reviewed for security and quality standards

Community First

Built by users, for users—no vendor lock-in or proprietary restrictions

Popular Integrations

Media
★4.8

Immich Photos

Self-hosted photo backup with facial recognition and smart albums

8.9K installs
Home Automation
★4.7

Home Security Hub

UniFi Protect integration with AI motion detection

6.2K installs
Home Automation
★4.6

Weather Station

Local weather data from personal sensors

4.1K installs
Productivity
★4.8

Document Scanner

OCR and organize paper documents automatically

3.8K installs
Home Automation
★4.5

Energy Monitor

Track home power usage in real-time

2.9K installs
Developer Tools
★4.9

Git Server

Host private repositories with web interface

5.3K installs

Build for Foundation

The Foundation SDK makes it ridiculously simple to build integrations. Write once, deploy to thousands of devices.

Open SDK with TypeScript

Modern development experience with full type safety and excellent docs

Sandboxed Execution

Secure runtime environment with granular permission controls

Community Marketplace

Share your integrations with thousands of Foundation users

photo-backup.tsFoundation SDK Example
import { Foundation } from '@foundation/sdk';
const app = new Foundation.App({);
name: 'Photo Backup',
permissions: ['files.read']
});
app.on('file.created', async (file) => {
if (file.isPhoto()) {
await app.storage.backup(file);
app.notify('Photo backed up!');
}
});

That's it. 10 lines to create a photo backup automation.

Not for you?

Foundation is hardware-first. While CornerstoneOS ships as the default experience, you're free to bring your own operating system. Here are some popular alternatives that work well with Foundation's architecture:

NAS-Focused

Unraid

Flexible storage pooling with Docker and VM support.

TrueNAS

Enterprise-grade ZFS storage with extensive plugin ecosystem.

OpenMediaVault

Lightweight Debian-based NAS solution with web UI.

General Purpose

Proxmox VE

Virtualization platform for running multiple OS instances.

Ubuntu Server

Standard Linux server with wide hardware support.

Debian

Stable, minimal foundation for custom configurations.

Foundation's open architecture means you're never locked in. Install what works for you.

The OS boots off an internal 2230 M.2 NVMe SSD, and we're more than willing to install an OS of your choice for you. Just know it hasn't been extensively tested on different operating systems yet.

Ready to take control?

CornerstoneOS comes pre-installed on every Foundation chassis. Reserve yours in the next production run.

PreorderExplore Foundation Hardware