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spruceOS vs MustardOS: catalog facts
spruceOS	MustardOS
Free Free community software published on GitHub.	Free Free to download from the official release page.
Linux	Linux
Supports handhelds from several makers, including Miyoo, TrimUI and Anbernic Bundles RetroArch and emulators in one package	Extensive theming and personalisation options Aims for minimal setup before playing
Only runs on supported handheld devices Installing custom software on a handheld takes some care	Only runs on supported handheld devices Flashing it replaces the device's stock firmware
Operating system	Operating system
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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