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All reservations, occupancy and integrations are stored as portable JSON files. Easy backups. Easy migration. Easy recovery.
Built around a fullscreen occupancy calendar with layered views, fast editing, reservation management and onboarding help.
Run locally, on VPS, mini PC, Ubuntu node or shared hosting. No forced SaaS lock-in.
Interactive onboarding guides help non-technical users learn the system directly inside the real interface.
Not part of CM Free itself - Guest Chat is a separate, standalone connector module, plugged into this CM install here to demonstrate how the CM Ecosystem's modularity works in practice.
Guests scan a code and enter the PIN they already have for the door - no account, no app install. This instance reads reservations straight from this CM install; the same module also runs cross-host over the new CM Bridge Protocol, unmodified.
This demo PIN is shared and intentionally public - everyone testing it
lands in the same conversation. A real guest gets their own private PIN.
Try it with demo PIN 1234 →
CM Companion is an open-source Android app that pairs directly with CM Free through the CM Bridge Protocol - today's arrivals and departures, alerts, and guest inquiries on your phone, with no account and no cloud middleman.
You are already in the CM Free Live Demo.
Explore CM here in your browser, and you can also try CM Companion with this demo
installation. No CM installation of your own is required.
Like it? Install CM Free on your own server and pair your Android phone from Admin → CM Companion.