Optiboot (an older version) is installed by default on the Arduino Uno and (as of 2018) official Arduino Nano boards. It can be installed on all older mega8, 168 or 328 based Arduinos. As of 2019, ...

This Arduino library provides the lua 5.3.6 ( release) scripting engine for supported devices. This allows dynamic execution of Lua code on the Arduino without having to compile and flash a new ...