Clemens is an Apple IIgs emulator for macOS (Catalina or later), Linux and Windows 10.
It runs most IIgs software under a ROM 3 compliant backend. It also aims to provide a solid frontend for both users and developers.

NOTE This software is in late Alpha. A variety of bugs have been fixed in the latest version. While this software will run most IIgs software, features like serial communication, printers and internationalization are currently planned but unfinished.