Alternatives to MustardOS

Custom firmware for retro gaming handhelds that is configurable, themeable and aimed at minimal setup. The listings below can replace it for an important use case. Each note says what changes if you switch.

The original

  • MustardOS

    Custom firmware for retro gaming handhelds that is configurable, themeable and aimed at minimal setup.

    FreeProprietaryLinux

Replacements

Listings that take over the same core job as MustardOS.

  • KNULLI

    Batocera-based custom firmware that turns retro gaming handhelds into emulation devices with RetroArch and standalone emulators.

    FreeProprietaryLinux

    KNULLI is Batocera-based handheld firmware that bundles RetroArch with standalone emulators like PPSSPP, adds Syncthing save sync, achievements and SSH, and likewise replaces the stock firmware.

  • ROCKNIX

    An immutable Linux distribution for handheld gaming devices, focused on retro game emulation.

    ROCKNIX is an open-source immutable Linux distribution for handhelds with Syncthing and rclone save sync, RetroAchievements, scraping and per-device performance profiles, and likewise runs on supported devices only.

Similar software

Related functionality, not a direct replacement.