Dissa - An Amiga disassembler by Ramazan. [Archive] - ftp://de.aminet.net/pub/aminet/misc/emu/dissa.lha
Avocet Big Bang Simulator - Avocet's AVS68K, 68xxx Family High Level Simulator includes a debugger, mini-assembler & disassembler. - http://www.avocetsystems.com/company/techshee/asheets/bbsim.html