Z80 shared library including some nice test-projects
C compiler and dev kit for the z80 with assembly language libraries.
Emulator of the 8-bit computers Sharp MZ-800 / MZ-700 / MZ-1500
The Small Device C Compiler (SDCC), targeting 8-bit architectures
A "Just Enough Language" compiler targeting the 6502/Z80/6809
A Toolkit for Designing Computers
TI graphing calculators <-> computer communication software
ZiLOG Z80 CPU emulation library
LLVM backend for Z80