ChaiScript is an embedded scripting language designed from the ground up to directly target C++ and take advantage of modern C++ development techniques. Being a native C++ application, it has some advantages over existing embedded scripting languages. It uses a header-only approach, which makes it easy to integrate with existing projects. It maintains type safety between your C++ application and user scripts. It supports a variety of C++ techniques including callbacks, overloaded functions, class methods, and STL containers.
GCPtr is a C++ smart pointer library with garbage collection. It defines a class of smart pointers which can be used to create and manage dynamic objects and arrays which are destroyed and freed by garbage collection when they are no longer referenced. These smart pointers are not based on reference counting. Garbage collection uses a mark-and-sweep algorithm.
LIME is a dynamic programming language with a LISP-like syntax. It features partial function application, eager and lazy evaluation, call-by-value and call-by-reference, macros, reading/writing LIME code as data, a standard library including infinite streams, and an interactive mode with auto-indentation.