I want to start programming for enjoyment. I don't enjoy C; I enjoy Ada. So this is where I start developing my Ada skills with practical, semi-practical, and goofy Ada libraries.
I like to relax by playing with weird languages. It doesn't get weirder than Logtalk, a declarative OOP language (toolkit?) built on top of Prolog.
Logtalk packs formally published. Generally projects initially from the logtalk-playground project which have been deemed suitable to release.
COROS is a CORoutine-based real-time OS kernel written in C and suited to a wide variety of embedded software systems where the complexity and non-determinism of pre-emptive scheduling is not desired.
An implementation of [Constraint Handling Rules (CHR)](https://constraint-handling-rules.org/) in the Lua programming language.
Open source ARM Cortex-M microcontroller library
A simulator for the Multics dps-8/m mainframe.