# Proton Lumo: Free Open Source Alternative to Grok

Canonical: https://caniforkit.com/fork/proton-lumo
Last updated: 2026-11-07

Proton Lumo (Open Source, Open Source) replaces Grok. AI chat assistant from Proton that stores conversations with zero-access encryption, never logs chats, and never uses your data to train models.

## Tool Specifications
- **Tool Name**: Proton Lumo
- **Type**: Open Source Project
- **License**: Open Source
- **Official Website**: https://proton.me/lumo
- **GitHub Repository**: https://github.com/ProtonMail/WebClients/tree/main/applications/lumo
- **GitHub Stars**: ★ 5.7k
- **Runs On**: Local
- **Maintenance Status**: nov 2026
- **Platforms**: desktop, cross-platform, one-click install
- **Data Storage**: All application data lives locally on your own machine.
- **Installation**: Clone https://github.com/ProtonMail/WebClients/tree/main/applications/lumo or deploy with Docker Compose
- **Setup Requirements**: Download the native package or installer for your operating system.
- **The Catch / Limitation**: Community-driven open source project without dedicated enterprise SLAs.

## Paid SaaS Applications Replaced (1)
Replacing these paid tools with Proton Lumo saves up to $15/mo ($180/yr) in software subscriptions:

| Replaced Software | Category | SaaS Price | Comparison Guide |
| --- | --- | --- | --- |
| [Grok](https://caniforkit.com/grok) | [community](https://caniforkit.com/category/community) | $15/mo | [Compare Grok vs Proton Lumo](https://caniforkit.com/vs/grok-vs-proton-lumo) |

## Frequently Asked Questions

### Is Proton Lumo free and open source?
Proton Lumo is an open source tool licensed under Open Source that runs on local. AI chat assistant from Proton that stores conversations with zero-access encryption, never logs chats, and never uses your data to train models.

### What is the trade-off or limitation of using Proton Lumo?
Community-driven open source project without dedicated enterprise SLAs.

## Related

- [Self-Hosted Open Source Directory](https://caniforkit.com/self-hosted)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Software Categories Directory](https://caniforkit.com/categories)
- [Homepage](https://caniforkit.com)