The development kit for over a hundred z80 family machines - c compiler, assembler, linker, libraries.

Command-line cross-compiler of assembly language for Z80 CPU.

Z80 / 8080 / Z180 assembler (for unix-style OS)

SB-Assembler Version 3 - Cross Macro Assembler

VEDIT ⧸ VEDIT‑PLUS for CP/M V2.33b (04/27/87) source code

Intel 8080 Emulator on 4004 Evaluation Board

com-cpm: COM, a CP/M-80 simulator (in portable C and 68000 assembly flavors) by Jim Cathey

Intel 8080 Emulator in 6502 assembly (prototyped in C)

CP/M 2.2 Bios for Enhanced Radio86RK. FDС schematics included

Home-brew Intel 8080 Single Board Computer with Altair BASIC Interpreter

A little hobby project aiming to recreate a fully documented assembly source listing of the OS ROM in the TRS 80 Model 102 portable computer

CP/M software

Disassembly and P112 port of Digital Research's ISIS-II emulator for CP/M

CP/M hardware dependent SC80 text editor for RK86 60K, original 32k version included

Information about retrocomputing

Project to bring CPM3 to IMSAI 8080 computer

An ED inspired (GNU + CP/M) inspired editor for the NorthStar Disk Operating System

Palo Alto Tiny BASIC v3 source code by Li-Chen Wang as published in the PCC's Reference Book

8080 Disassembler and Emulator

Intel 8080 Assembler in Python