Directories "asm", "c", "cross", "debug" contain disassembler references, by Aminet, Amiga Software.

Avocet's AVS68K, 68xxx Family High Level Simulator includes a debugger, mini-assembler & disassembler.

An Amiga disassembler by Ramazan. [Archive]

Disassembler for Motorola M68000 thru M68030 CPUs. Includes full source in C by Christopher G. Phillips.