GUI64 - C64-Wiki

Global World Wed, 04 Nov 2026 12:41:37 GMT Moderate confidence — 64/100

GUI64 Infobox Developer WebFritzi Company n.a.
Although GUI64 may appear to be a standalone operating system, it is just a graphical layer running on top of the C64’s built-in ROM-based operating system, the Kernal.

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GUI64 Infobox Developer WebFritzi Company n.a.
Although GUI64 may appear to be a standalone operating system, it is just a graphical layer running on top of the C64’s built-in ROM-based operating system, the Kernal.

Sources: C64-wiki