• PortablE Mostly AmigaE compatible, but with a compiler that generates portable C++ instead of M68k Amiga object files.
• C/C++ (gcc, vbcc)
• Python
• AmiBlitz
• Modula II
• Lua
• Perl
• Hollywood Commercial / proprietary multimedia language
• Ruby (full 1.9.0 port for MorphOS)

Languages with ports that are not actively maintained or that are incomplete, but where the upstream version is still maintained.

• Javascript (minimal SpiderMonkey port on Aminet)
• Ruby (minimal 1.8.4 port on Aminet)
• Free pascal (fpc) (alpha release of 2.1.1 on OS4Depot)
• ???

Interpreters and compilers that are no longer maintained, but where there are reasonable complete/stable implementations (some of these are ports - in those cases there may be a more up to date upstream version, but if the upstream version is actively maintained we should move the entry to the category above).

• ARexx
• AmigaE
• XLisp
• AmigaPascal
• CForth
• CLisp
• Draco
• B-Prolog
• SmallEiffel
• Gambit Scheme
• FPL