An open source replacement for umbrelOS that still runs Umbrel, but uses a modernized Debian base.
SchirmOS is still in an early stage and things are expected to break every now and then.
SchirmOS is licensed under the GNU Affero General Public License v3.0 or later.
It includes code from umbrel-os and pi-gen, which are
Copyright (c) 2015 Raspberry Pi (Trading) Ltd.
Copyright (c) 2020 Umbrel. https://getumbrel.com/
"Being open source means anyone can independently review the code. If it was closed source, nobody could verify the security. I think it's essential for a program of this nature to be open source." — Satoshi Nakamoto