Welcome to Amiga.org! I'm glad to hear there's another Amos programmer coming back to the Amiga. Since Amos programs typically don't work on AmigaOS 4, Sidewinder and I am trying to engineer a replacement for Amos that will use C as a backend. When and if it is finished it will have some features added from Java and C++ for OOP designing. I don't expect it to be finished for some time, however.