Those tools are built into his AVRPascal code editor to create a Pascal-based alternative to the Arduino IDE for programming AVR-based microcontrollers.

Download the Arduino Open Source Report 2023 here. The support for MicroPython has also been strengthened, offering an alternative to the traditional Arduino programming approach.

[Andy] stuffed some more RAM onto an Arduino Mega and his three-part walk through on the design, construction, and software is a great read and one of the more ‘hard core’ Arduino builds we ...

It's of course backwards compatible with existing Arduino add-ons, but sets itself apart with a new USB controller with lower latency and driver-free operation on Mac and Linux.