Lua is a programming language originally designed for extending applications, but also frequently used as a general-purpose, stand-alone language. It combines simple procedural syntax (similar to Pascal) with powerful data description constructs based on associative arrays and extensible semantics. It is dynamically typed, interpreted from bytecodes, and has automatic memory management, making it ideal for configuration, scripting, and rapid prototyping. It is implemented as a small library of C functions, written in ANSI C, and compiles unmodified in all known platforms. The implementation goals are simplicity, efficiency, portability, and low embedding cost. It has been used on games such as World of Warcraft, FarCry and Angry Birds, among others.
xemmai is a dynamic programming language. It has lambda closures, classes, exceptions, modules, threads, and fibers. It is implemented in C++ and has a C++ friendly API to implement extension modules. It aims to be a general purpose glue language. It runs on Linux, Windows, and hopefully other Unix systems. Internally, codes are executed on a byte code interpreter. It also has a concurrent garbage collector to utilize multiple processors.
Alore is an object-oriented programming language with a clean syntax that resembles Python and Lua. It is optionally-typed like Google Dart. It is both a dynamic scripting language and a general-purpose language with static typing. It is aimed at most programming tasks, from short scripts to complex applications. It allows programmers to freely mix static and dynamic typing within a program. It has native threads and a very fast edit-test cycle. Programmers can always bypass type checking and run their programs immediately.
tinypy is a minimalist implementation of Python in 64k of code. It includes a parser and bytecode compiler written in python. tinypy runs on its own C-based virtual machine with garbage collection. It supports a fairly decent subset of Python, including classes with single inheritance, functions with variable or keyword arguments, strings, lists, dicts, numbers, modules, list comprehensions, exceptions with full traceback, some builtins, and several modules.
Ripple is a dedicated scripting language for the Semantic Web. Ripple programs not only query the Semantic Web, but also reside within it as RDF data structures, forming a global network of interlinked programs. Ripple is best classified as a relational stack language, closely related to functional stack languages such as Joy, Factor, and Cat. As a Semantic Web interface, Ripple is a fast, text-based linked data crawler and browser with all of the flexibility of a Turing-complete programming language.