There's also vbcc, a portable C compiler for C89 and C99, which comes with a really powerful assembler and linker.
VASM and VLink are the names of the powerful assembler and linker. Also, if you run across PhxAss and PhxLink, they are Kickstart 1.3 compatible predecessors of VASM and VLink that were written in closed-source assembly themselves while VASM and VLink are written in C and compiled with VBCC.
