This sounds very much like Amiga Incs Amiga DE, system agnostic, etc.
Amiga 500, A600 (x2), A1200 (x2), CDTV, AmigaOne XE G4 with AOS4.1, PC with AmigaForever2010, Netbook with AmigaForever2011 and AROS, PowerMac G4 with OSX 10.4.11 and MorphOS, Powermac G5, Mac Mini G4 with 10.5 and MorphOS