Io, a Small Programming Language

Io is small prototype-based programming language. The ideas in Io are mostly inspired by Smalltalk (all values are objects), Self (prototype-based), NewtonScript (differential inheritance), Act1 (actors and futures for concurrency), LISP (code is a runtime inspectable / modifiable tree) and Lua (small, embeddable). Io offers a more flexible language with more scalable concurrency in a smaller, simpler package than traditional languages and is well suited for use as both scripting and embedding within larger projects. Io is implemented in C and it's actor based concurrency model is built on coroutines and asynchronous i/o. It supports exceptions, incremental garbage collection and weak links.