See also:

• Computers: Programming: Languages: Object-Oriented: Pure  (1)
• Computers: Programming: Languages: Reflective  (8)

Canonware Onyx - - Stack-based (are first class objects, double-ended), object-oriented, multithreaded (POSIX), interpreted, garbage collected, general purpose, similar to PostScript; embedable as extension language. Downloads, documents. Open source, BSD.

Factor - - Dynamically typed, stack-based language; has optimizing native compiler, automatic memory management, generational garbage collector, collections library, advanced features: higher-order programming, continuations, extensible syntax.

Raven Scripting Language - - Clear, consise syntax; postfix notation, data stack, dictionary of short atomic functions, whitespace indentation; Perl-like lists, hash tables, regular expressions; closures as simple object model, multithreading. Description, downloads, manual, mail list. Open source, GPL.

Wikipedia: Data-structured Language - - Online encyclopedia article providing an overview of this type of programming language.