Compilers and assemblers targeting Z-code, to run on the Z-machine originally used by Infocom. (And its descendant, Glulx.)
A macro assembler for the Z-machine
Version 5 of the Inform compiler (superseded by inform6)
Version 6 of the Inform compiler
Inform 7, a natural-language compiler
Historical versions of Inform (before Inform 5)
A C compiler targeting the Z-machine
A Z-machine assembler
A ZIL compiler (includes the ZAPF assembler)