NSP is the complete object-based scripting language written in just a few thousand lines of ansi c. It's portable, thread-safe, flexible, embeddable, expandable and easy to understand (as a language and as an API).
BASIC interpreter for the standard (SUS) character screen handling library, which fully corresponds to the Tiny BASIC standard. The code is thread-safe and can be embedded into other code. Can be used as a game or a minimalist challenge.