Aren't most AROS apps written to run in x86 AROS, and therefore not compatible with 68 k AROS?
No, most programs are written in C using the Amiga API, some of them in C++. Every night most of the programs are compiled for a lot of CPUs: i386, AMD64, PPC, ARM, M68k. Most of the programs on aros-archives are only compiled for i386 as it is the only arch that has a somewhat stable ABI.
greets,
Staf.