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umbrelOS vs Sandstorm: catalog facts
umbrelOS	Sandstorm
Free Free for personal and nonprofit use; Umbrel hardware is sold separately.	Free Free and open source, self-hosted.
Self-hosted	Self-hosted
One-click installs from an app store of over 300 apps Runs on PCs, Raspberry Pi 5 and virtual machines	Per-app sandboxing limits the damage a compromised app can do Lets you self-host multiple web apps from one platform
Source-available licence, not open source Commercial use is not covered by the free licence	Smaller and less actively developed than mainstream container platforms App ecosystem is more limited than general-purpose container registries
Operating system	Self-hosted
Closed source	Open source
License: PolyForm-Noncommercial-1.0.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.