Well, you are talking 68k so the options are (allmost) endless:
Various C compilers: StormC, GCC, Maxon(HiSoft)C, Manx, Lattice(SAS),Dice
A horde of assemblers : AsmOne,AsmPro,DevPac,OMA,PhxAss ......
The Wirth-trio : Pascal (HiSoft/Maxon) Modula2, Oberon
The just weird : Amiga-E
Obscure Basic-dialects: AMOS, BlitzBasic, ACE
Sure I've missed atleast half of them.