8051 for Arduino IDE C Package for all STC89C51 family
The 8051 Simulator for Students and Educators
Soft SSD1306 by I2C AVR or 8051 Universal Arduino(R) IDE
Soft I2C Universal Arduino AVR or 8051 Device for Arduino(R) IDE
LiquidCrystal Universal LCD Library for Arch 8051 / AVR Arduino(R) IDE
7 seg universal Arduino Ardui89 AVR 8051 Device Driver 89C51 89C52...
EEPROM and FLASH Labraries for Arduino IDE with Ardui89
An embedded development environment on vscode
A cooperative scheduler OS for the 8051 and its derivatives.
A z80n-targeted repack of SDCC Win64 snapshot
Controlling your devices with vb.net and 8051
Structured programming in 8051 assembler
A command-line programmer for Atmel USB microcontrollers
MCS-51 programmer for Linux
LED matrix rebirth
Support for Texas Instruments CC Debugger in Linux
8051 Simulator
MCS 8051 STK