# SilverMetal

> **Privacy-hardened devices for users who want their privacy back — on whatever platform they have.**

SilverMetal is SilverLABS' cross-platform privacy-hardening program. We don't believe in "one true OS" — we meet users on the platform they actually use, and give them the strongest hardening that platform physically allows. Honestly labelled, no marketing fluff.

## Two product lines

The SilverMetal program ships two distinct product lines, named to make their scope obvious to buyers:

### 🔒 SilverMetal OS
**We ship the operating system or ROM.** Full kernel-level control, our verified-boot key, our update channel. Strongest possible hardening.

- **SilverMetal OS — Linux** *(Debian/Kicksecure-based ISO)* — Tier A
- **SilverMetal OS — Pixel** *(GrapheneOS-fork ROM)* — Tier B
- **SilverMetal OS — Samsung** *(LineageOS-fork ROM, unlocked-bootloader models)* — Tier C
- **SilverMetal OS — Motorola** *(DivestOS/LineageOS-fork ROM)* — Tier C

### 🛡️ SilverMetal Enhanced
**We harden the OS your device already runs.** Configuration profiles, hardening installers, the SilverLABS Application Stack. For users who can't or won't replace their OS.

- **SilverMetal Enhanced — Windows** *(LTSC IoT installer + hardening + Stack)* — Tier C
- **SilverMetal Enhanced — macOS** *(signed config profile + setup script + Stack)* — Tier C-D
- **SilverMetal Enhanced — iOS** *(MDM profile + Stack)* — Tier D
- **SilverMetal Enhanced — Android** *(generic profile + Stack on existing Android)* — Tier D

Tiers explained in [`docs/platform-matrix.md`](docs/platform-matrix.md).

## What every SilverMetal device gets

Both lines ship the **SilverLABS Application Stack** — a suite of cross-platform privacy apps that replace the cloud services your device normally talks to (Google, Apple, Microsoft):

| Component | Status | Purpose |
|---|---|---|
| **SilverBrowser** | v1 (Linux MVP) | De-Googled, telemetry-free, fingerprint-resistant browser |
| **SilverVPN** | **Existing** — see [`SilverLABS/SilverVPN`](https://git.silverlabs.uk/SilverLABS/SilverVPN) | Always-on, no-logs VPN with our own infrastructure |
| **SilverSync** | v1 (Linux MVP) | Private replacement for iCloud / Google Drive / OneDrive |
| **SilverChat** | **Existing** — `SilverVPN.Client.Chat`, Signal Protocol over VPN transport. Promoted from v1.1 to v1 | E2EE messenger |
| **SilverDuress** | v1.1 | Duress password / panic-wipe / anti-coercion |
| **SilverKeys** | v1.1 | Zero-knowledge password + 2FA manager |

## Two ways to get SilverMetal

Every flavour — OS or Enhanced — supports both buyer modes:

### "I'm choosing a new device"
Buy a **preflashed SilverMetal SKU**. We've done all the work; it arrives ready.

### "I already own a device and want to harden it"
Download the **free SilverLABS Stack** + the **SilverMetal OS or Enhanced package** for your platform. Apply it yourself. Same software, same hardening, no hardware lock-in.

## Status

| Component | Status |
|---|---|
| Documentation + roadmap | Initial scaffold complete |
| SilverMetal OS — Linux v1 | Phase 1 — moving to milestone 1.1 (build pipeline) |
| SilverLABS Stack v1 (Browser + Sync) | Planning |
| SilverVPN | Existing product, integration into v1 ISO planned |
| SilverChat | Existing product (`SilverVPN.Client.Chat`); promoted to v1, integration into v1 ISO planned |
| Other OS/Enhanced flavours | Planning, post-Linux v1 |

See [`docs/roadmap.md`](docs/roadmap.md) for the milestone-driven plan.

## Related repositories

| Repo | Relationship |
|---|---|
| [`SilverLABS/SilverVPN`](https://git.silverlabs.uk/SilverLABS/SilverVPN) | The VPN component of the SilverLABS Stack — already in production. SilverMetal integrates it; does not re-implement it |
| [`SilverLABS/SilverApple`](https://git.silverlabs.uk/SilverLABS/SilverApple) | **Deprecated.** Earlier iOS-hardening prototype, superseded by *SilverMetal Enhanced — iOS* |
| [`SilverLABS/SilverDROID`](https://git.silverlabs.uk/SilverLABS/SilverDROID) | Unrelated (SilverSHELL AppStore Android client). Name is similar but scope is different |

## Documentation

- [`docs/threat-model.md`](docs/threat-model.md) — who we defend against, who we don't
- [`docs/design-principles.md`](docs/design-principles.md) — privacy-by-default, verifiability, honesty
- [`docs/platform-matrix.md`](docs/platform-matrix.md) — full per-platform pros/cons
- [`docs/roadmap.md`](docs/roadmap.md) — milestones, ship order, scope
- [`docs/trust-model.md`](docs/trust-model.md) — signing keys, reproducible builds, governance

## License

Components carry their own licenses (most are GPL/MIT/Apache-derived from upstream forks). Original SilverLABS-authored glue code is AGPL-3.0-or-later. See [`LICENSE`](LICENSE).

## SilverLABS

SilverMetal is built by [SilverLABS](https://silverlabs.uk) — privacy-first infrastructure and applications.