Squirrel
Squirrel is an open Lua-like dynamic language designed for embedding, reference counting, and C++ integration in real-time applications.
Why use it
It lets gameplay and quest logic iterate without rebuilding the entire client.
Where it fits
Find engines, frameworks, code libraries, version control, and production automation.
What to check
Its official ecosystem and release cadence are limited, so teams must strengthen sandboxing, security, and debugging.