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Copyright © 2026 Ben Letchford and Systemless contributors.
The Systemless emulator and runtime code in this public repository is
distributed under GPL-3.0-or-later. See [LICENSE](./LICENSE) for the full licence
text.
Some components have additional component-specific licences. In particular,
the original bitmap font sources in `src/quickdraw/fonts/pixel_font/` are also
available under the SIL Open Font License 1.1, with "Systemless" as the Reserved
Font Name. See [OFL.txt](./OFL.txt).
Ben Letchford may make software for which he holds sufficient rights available
under separate commercial licence terms. Receiving Systemless source from
GitHub or crates.io under the GPL does not grant a proprietary or separate
commercial licence.
A separately licensed Systemless distribution does not revoke or diminish any
GPL rights already granted in the open-source project. This document does not
change the licence of this GPL repository or offer a commercial licence to the
public.
Contributions are accepted subject to the current
[Systemless Contributor Agreement](./CLA.md). Contributors retain copyright in
their contributions and grant Ben Letchford the additional non-exclusive rights
described in that agreement.
Adding the agreement to this repository does not make historical contributors
subject to it. Existing contributors must accept it separately before their
work can be treated as covered by those additional permissions.
Dependencies, third-party code, and assets remain governed by their respective
licences. A separately licensed Systemless distribution does not relicense
third-party material; every included component must independently permit that
distribution.
Systemless does not obtain redistribution rights to classic Macintosh
applications or games merely because it can run them. Rights to distribute game
and application content are separate from the licensing of Systemless itself.