YAZD/YAZA - Yet Another Z80 Disassembler/Assembler
YAZD
YAZD is a simple command line disassembler for Z80 binary code files. It's based on the disassembler in z80ex, ported to C#.
YAZA
YAZA is a Z-80 assembler that generates flat binary code (as opposed to relocatable .rel files). It's very similar to z80asm but includes a bunch of enhancements.