Io 1.0 review

Io is small prototype-based programming language.

License: Freeware OS: Windows Vista / 7 / 8 / 10 File size: 6756K Developer: Steve Dekorte Price: $0.00 Updated: 11 Nov 2005

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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).

Here are some key features of "Io":
open source BSD license
pure object language
small VM (~16K C statements, 8K Io specific)
small memory footprint (between 64K-200K depending on the platform)
reasonably fast (comparable to Python, Perl, Ruby)
incremental collector, weak links
differential prototype-based object model
dynamic typing
exceptions
ANSI C implementation (except for coroutines)
embeddable
multi-state (multiple VMs can run in the same application)
actor-based concurrency
coroutines
64 bit clean.