It is developed exclusively for [http://www.morphos.de/ MorphOS].<br />[[PulkoMandy]] is maintaining the port for [https://www.haiku-os.org/ Haiku].
Also worth mentioning is [[ACE-DL]], a derivative version of ACE with its unique strengths and available for Windows, macOS and Linux(implementing an old school minimalist SDL GUI only, also with no scripting or external plugins support).
* [[Nova]] (NV-RAM and RTC).
* [[MultiPlay]] (additional mice and joysticks ports).
* [[Willy]] (up to 18 channels FM synthetizer and MIDI sound cardcards).
* [[PlayCity]] (6 voices PSG sound card).
* [[Amdrum]] (8-bit mono sound card).