Screenshots:

ZincOS is a small OS for microcontrollers that uses ZincScript (interpreter) and ZincShell (shell) for it's CLI. You can code in Zinc script then save and run it by using the append and run command. Check ZincOS/zOS/v0.1.0.1.5/ZincScript documentation.txt for more information about this. ZincOS uses MKernel to communicate with pins if commands like dwr are used.

ZincOS was tested on:
Arduino Uno R3
NodeMCU V3

Compile and upload with Arduino IDE

note:
v0.1.0.1.6
first 0.1 is ZincShell version
0.1.6 is ZincScript version
0.1.4 is Mkern version (not shown)

full version number is located in versions.txt in zOS/[version]